diff --git a/README.md b/README.md
index 0faea3e..0e5aac1 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,8 @@ Twitter: [@neilpangxa](https://twitter.com/neilpangxa)
 - [splynx](https://forum.splynx.com/t/free-ssl-cert-for-splynx-lets-encrypt/297)
 - [archlinux](https://aur.archlinux.org/packages/acme.sh-git/)
 - [opnsense.org](https://github.com/opnsense/plugins/tree/master/security/acme-client/src/opnsense/scripts/OPNsense/AcmeClient)
+- [CentOS Web Panel](http://centos-webpanel.com/)
+- [lnmp.org](https://lnmp.org/)
 - [more...](https://github.com/Neilpang/acme.sh/wiki/Blogs-and-tutorials)
 
 # Tested OS
@@ -399,7 +401,7 @@ Valid values are:
 It's simple, just give a wildcard domain as the `-d` parameter.
 
 ```sh
-acme.sh  --issue -d example.com  -d *.example.com  --dns dns_cf
+acme.sh  --issue -d example.com  -d '*.example.com'  --dns dns_cf
 ```
 
 
diff --git a/acme.sh b/acme.sh
index e7c40c0..72d0e2a 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1617,6 +1617,7 @@ _post() {
   _debug $httpmethod
   _debug "_post_url" "$_post_url"
   _debug2 "body" "$body"
+  _debug2 "_postContentType" "$_postContentType"
 
   _inithttp
 
@@ -1625,14 +1626,19 @@ _post() {
     if [ "$HTTPS_INSECURE" ]; then
       _CURL="$_CURL --insecure  "
     fi
-    if [ "$_postContentType" ]; then
-      _CURL="$_CURL -H \"Content-Type: $_postContentType\" "
-    fi
     _debug "_CURL" "$_CURL"
     if [ "$needbase64" ]; then
-      response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url" | _base64)"
+      if [ "$_postContentType" ]; then
+        response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod -H "Content-Type: $_postContentType" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url" | _base64)"
+      else
+        response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url" | _base64)"
+      fi
     else
-      response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url")"
+      if [ "$_postContentType" ]; then
+        response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod -H "Content-Type: $_postContentType" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url")"
+      else
+        response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url")"
+      fi
     fi
     _ret="$?"
     if [ "$_ret" != "0" ]; then
@@ -1785,6 +1791,11 @@ _send_signed_request() {
     return 1
   fi
 
+  if [ "$ACME_VERSION" = "2" ]; then
+    __request_conent_type="$CONTENT_TYPE_JSON"
+  else
+    __request_conent_type=""
+  fi
   payload64=$(printf "%s" "$payload" | _base64 | _url_replace)
   _debug3 payload64 "$payload64"
 
@@ -1797,7 +1808,7 @@ _send_signed_request() {
       if [ "$ACME_NEW_NONCE" ]; then
         _debug2 "Get nonce. ACME_NEW_NONCE" "$ACME_NEW_NONCE"
         nonceurl="$ACME_NEW_NONCE"
-        if _post "" "$nonceurl" "" "HEAD" "$CONTENT_TYPE_JSON"; then
+        if _post "" "$nonceurl" "" "HEAD" "$__request_conent_type"; then
           _headers="$(cat "$HTTP_HEADER")"
         fi
       fi
@@ -1852,7 +1863,7 @@ _send_signed_request() {
     fi
     _debug3 body "$body"
 
-    response="$(_post "$body" "$url" "$needbase64" "POST" "$CONTENT_TYPE_JSON")"
+    response="$(_post "$body" "$url" "$needbase64" "POST" "$__request_conent_type")"
     _CACHED_NONCE=""
 
     if [ "$?" != "0" ]; then
@@ -3247,10 +3258,16 @@ _regAccount() {
     return 1
   fi
 
+  _debug2 responseHeaders "$responseHeaders"
   _accUri="$(echo "$responseHeaders" | grep "^Location:" | _head_n 1 | cut -d ' ' -f 2 | tr -d "\r\n")"
   _debug "_accUri" "$_accUri"
+  if [ -z "$_accUri" ]; then
+    _err "Can not find account id url."
+    _err "$responseHeaders"
+    return 1
+  fi
   _savecaconf "ACCOUNT_URL" "$_accUri"
-  export ACCOUNT_URL="$ACCOUNT_URL"
+  export ACCOUNT_URL="$_accUri"
 
   CA_KEY_HASH="$(__calcAccountKeyHash)"
   _debug "Calc CA_KEY_HASH" "$CA_KEY_HASH"
@@ -3521,7 +3538,7 @@ issue() {
   _saved_account_key_hash="$(_readcaconf "CA_KEY_HASH")"
   _debug2 _saved_account_key_hash "$_saved_account_key_hash"
 
-  if [ -z "$_saved_account_key_hash" ] || [ "$_saved_account_key_hash" != "$(__calcAccountKeyHash)" ]; then
+  if [ -z "$ACCOUNT_URL" ] || [ -z "$_saved_account_key_hash" ] || [ "$_saved_account_key_hash" != "$(__calcAccountKeyHash)" ]; then
     if ! _regAccount "$_accountkeylength"; then
       _on_issue_err "$_post_hook"
       return 1
@@ -3819,7 +3836,7 @@ $_authorizations_map"
     if [ "$dnsadded" = '0' ]; then
       _savedomainconf "Le_Vlist" "$vlist"
       _debug "Dns record not added yet, so, save to $DOMAIN_CONF and exit."
-      _err "Please add the TXT records to the domains, and retry again."
+      _err "Please add the TXT records to the domains, and re-run with --renew."
       _clearup
       _on_issue_err "$_post_hook"
       return 1
@@ -4105,12 +4122,12 @@ $_authorizations_map"
     fi
   else
     if ! _send_signed_request "${ACME_NEW_ORDER}" "{\"resource\": \"$ACME_NEW_ORDER_RES\", \"csr\": \"$der\"}" "needbase64"; then
-      _err "Sign failed."
+      _err "Sign failed. $response"
       _on_issue_err "$_post_hook"
       return 1
     fi
     _rcert="$response"
-    Le_LinkCert="$(grep -i '^Location.*$' "$HTTP_HEADER" | _head_n 1 | tr -d "\r\n" | cut -d " " -f 2)"
+    Le_LinkCert="$(grep -i '^Location.*$' "$HTTP_HEADER" | _tail_n 1 | tr -d "\r\n" | cut -d " " -f 2)"
     echo "$BEGIN_CERT" >"$CERT_PATH"
 
     #if ! _get "$Le_LinkCert" | _base64 "multiline"  >> "$CERT_PATH" ; then
@@ -5456,8 +5473,8 @@ Parameters:
   --cert-home                       Specifies the home dir to save all the certs, only valid for '--install' command.
   --config-home                     Specifies the home dir to save all the configurations.
   --useragent                       Specifies the user agent string. it will be saved for future use too.
-  --accountemail                    Specifies the account email for registering, Only valid for the '--install' command.
-  --accountkey                      Specifies the account key path, Only valid for the '--install' command.
+  --accountemail                    Specifies the account email, only valid for the '--install' and '--update-account' command.
+  --accountkey                      Specifies the account key path, only valid for the '--install' command.
   --days                            Specifies the days to renew the cert when using '--issue' command. The max value is $MAX_RENEW days.
   --httpport                        Specifies the standalone listening port. Only valid if the server is behind a reverse proxy or load balancer.
   --local-address                   Specifies the standalone/tls server listening address, in case you have multiple ip addresses.
diff --git a/dnsapi/dns_azure.sh b/dnsapi/dns_azure.sh
index 677a9f7..e0d9516 100644
--- a/dnsapi/dns_azure.sh
+++ b/dnsapi/dns_azure.sh
@@ -99,6 +99,7 @@ dns_azure_add() {
   _azure_rest PUT "$acmeRecordURI" "$body" "$accesstoken"
   if [ "$_code" = "200" ] || [ "$_code" = '201' ]; then
     _info "validation value added"
+    return 0
   else
     _err "error adding validation value ($_code)"
     return 1
@@ -194,6 +195,7 @@ dns_azure_rm() {
       _azure_rest PUT "$acmeRecordURI" "$body" "$accesstoken"
       if [ "$_code" = "200" ] || [ "$_code" = '201' ]; then
         _info "validation value removed"
+        return 0
       else
         _err "error removing validation value ($_code)"
         return 1
@@ -226,6 +228,7 @@ _azure_rest() {
     else
       response="$(_get "$ep")"
     fi
+    _ret="$?"
     _secure_debug2 "response $response"
     _code="$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d "\r\n")"
     _debug "http response code $_code"
@@ -236,7 +239,7 @@ _azure_rest() {
       return 1
     fi
     # See https://docs.microsoft.com/en-us/azure/architecture/best-practices/retry-service-specific#general-rest-and-retry-guidelines for retryable HTTP codes
-    if [ "$?" != "0" ] || [ -z "$_code" ] || [ "$_code" = "408" ] || [ "$_code" = "500" ] || [ "$_code" = "503" ] || [ "$_code" = "504" ]; then
+    if [ "$_ret" != "0" ] || [ -z "$_code" ] || [ "$_code" = "408" ] || [ "$_code" = "500" ] || [ "$_code" = "503" ] || [ "$_code" = "504" ]; then
       _request_retry_times="$(_math "$_request_retry_times" + 1)"
       _info "REST call error $_code retrying $ep in $_request_retry_times s"
       _sleep "$_request_retry_times"
@@ -281,6 +284,7 @@ _azure_getaccess_token() {
   body="resource=$(printf "%s" 'https://management.core.windows.net/' | _url_encode)&client_id=$(printf "%s" "$clientID" | _url_encode)&client_secret=$(printf "%s" "$clientSecret" | _url_encode)&grant_type=client_credentials"
   _secure_debug2 "data $body"
   response="$(_post "$body" "https://login.microsoftonline.com/$tenantID/oauth2/token" "" "POST")"
+  _ret="$?"
   _secure_debug2 "response $response"
   response="$(echo "$response" | _normalizeJson)"
   accesstoken=$(echo "$response" | _egrep_o "\"access_token\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
@@ -290,7 +294,7 @@ _azure_getaccess_token() {
     _err "no acccess token received. Check your Azure settings see $WIKI"
     return 1
   fi
-  if [ "$?" != "0" ]; then
+  if [ "$_ret" != "0" ]; then
     _err "error $response"
     return 1
   fi
diff --git a/dnsapi/dns_cf.sh b/dnsapi/dns_cf.sh
index 68264a4..3595b9b 100755
--- a/dnsapi/dns_cf.sh
+++ b/dnsapi/dns_cf.sh
@@ -19,8 +19,8 @@ dns_cf_add() {
   if [ -z "$CF_Key" ] || [ -z "$CF_Email" ]; then
     CF_Key=""
     CF_Email=""
-    _err "You don't specify cloudflare api key and email yet."
-    _err "Please create you key and try again."
+    _err "You didn't specify a cloudflare api key and email yet."
+    _err "Please create the key and try again."
     return 1
   fi
 
@@ -94,8 +94,8 @@ dns_cf_rm() {
   if [ -z "$CF_Key" ] || [ -z "$CF_Email" ]; then
     CF_Key=""
     CF_Email=""
-    _err "You don't specify cloudflare api key and email yet."
-    _err "Please create you key and try again."
+    _err "You didn't specify a cloudflare api key and email yet."
+    _err "Please create the key and try again."
     return 1
   fi
 
diff --git a/dnsapi/dns_dgon.sh b/dnsapi/dns_dgon.sh
index 7e1f1fe..5d38ef7 100755
--- a/dnsapi/dns_dgon.sh
+++ b/dnsapi/dns_dgon.sh
@@ -20,12 +20,22 @@
 dns_dgon_add() {
   fulldomain="$(echo "$1" | _lower_case)"
   txtvalue=$2
+
+  DO_API_KEY="${DO_API_KEY:-$(_readaccountconf_mutable DO_API_KEY)}"
+  # Check if API Key Exist
+  if [ -z "$DO_API_KEY" ]; then
+    DO_API_KEY=""
+    _err "You did not specify DigitalOcean API key."
+    _err "Please export DO_API_KEY and try again."
+    return 1
+  fi
+
   _info "Using digitalocean dns validation - add record"
   _debug fulldomain "$fulldomain"
   _debug txtvalue "$txtvalue"
 
   ## save the env vars (key and domain split location) for later automated use
-  _saveaccountconf DO_API_KEY "$DO_API_KEY"
+  _saveaccountconf_mutable DO_API_KEY "$DO_API_KEY"
 
   ## split the domain for DO API
   if ! _get_base_domain "$fulldomain"; then
@@ -39,7 +49,7 @@ dns_dgon_add() {
   export _H1="Content-Type: application/json"
   export _H2="Authorization: Bearer $DO_API_KEY"
   PURL='https://api.digitalocean.com/v2/domains/'$_domain'/records'
-  PBODY='{"type":"TXT","name":"'$_sub_domain'","data":"'$txtvalue'"}'
+  PBODY='{"type":"TXT","name":"'$_sub_domain'","data":"'$txtvalue'","ttl":120}'
 
   _debug PURL "$PURL"
   _debug PBODY "$PBODY"
@@ -65,6 +75,16 @@ dns_dgon_add() {
 dns_dgon_rm() {
   fulldomain="$(echo "$1" | _lower_case)"
   txtvalue=$2
+
+  DO_API_KEY="${DO_API_KEY:-$(_readaccountconf_mutable DO_API_KEY)}"
+  # Check if API Key Exist
+  if [ -z "$DO_API_KEY" ]; then
+    DO_API_KEY=""
+    _err "You did not specify DigitalOcean API key."
+    _err "Please export DO_API_KEY and try again."
+    return 1
+  fi
+
   _info "Using digitalocean dns validation - remove record"
   _debug fulldomain "$fulldomain"
   _debug txtvalue "$txtvalue"
@@ -92,11 +112,11 @@ dns_dgon_rm() {
     domain_list="$(_get "$GURL")"
     ## 2) find record
     ## check for what we are looing for: "type":"A","name":"$_sub_domain"
-    record="$(echo "$domain_list" | _egrep_o "\"id\"\s*\:\s*\"*\d+\"*[^}]*\"name\"\s*\:\s*\"$_sub_domain\"[^}]*\"data\"\s*\:\s*\"$txtvalue\"")"
+    record="$(echo "$domain_list" | _egrep_o "\"id\"\s*\:\s*\"*[0-9]+\"*[^}]*\"name\"\s*\:\s*\"$_sub_domain\"[^}]*\"data\"\s*\:\s*\"$txtvalue\"")"
     ## 3) check record and get next page
     if [ -z "$record" ]; then
       ## find the next page if we dont have a match
-      nextpage="$(echo "$domain_list" | _egrep_o "\"links\".*" | _egrep_o "\"next\".*" | _egrep_o "http.*page\=\d+")"
+      nextpage="$(echo "$domain_list" | _egrep_o "\"links\".*" | _egrep_o "\"next\".*" | _egrep_o "http.*page\=[0-9]+")"
       if [ -z "$nextpage" ]; then
         _err "no record and no nextpage in digital ocean DNS removal"
         return 1
@@ -108,7 +128,7 @@ dns_dgon_rm() {
   done
 
   ## we found the record
-  rec_id="$(echo "$record" | _egrep_o "id\"\s*\:\s*\"*\d+" | _egrep_o "\d+")"
+  rec_id="$(echo "$record" | _egrep_o "id\"\s*\:\s*\"*[0-9]+" | _egrep_o "[0-9]+")"
   _debug rec_id "$rec_id"
 
   ## delete the record
diff --git a/dnsapi/dns_pdns.sh b/dnsapi/dns_pdns.sh
index 7d807c8..3d99e10 100755
--- a/dnsapi/dns_pdns.sh
+++ b/dnsapi/dns_pdns.sh
@@ -90,7 +90,7 @@ set_record() {
   full=$2
   txtvalue=$3
 
-  if ! _pdns_rest "PATCH" "/api/v1/servers/$PDNS_ServerId/zones/$root." "{\"rrsets\": [{\"changetype\": \"REPLACE\", \"name\": \"$full.\", \"type\": \"TXT\", \"ttl\": $PDNS_Ttl, \"records\": [{\"name\": \"$full.\", \"type\": \"TXT\", \"content\": \"\\\"$txtvalue\\\"\", \"disabled\": false, \"ttl\": $PDNS_Ttl}]}]}"; then
+  if ! _pdns_rest "PATCH" "/api/v1/servers/$PDNS_ServerId/zones/$root" "{\"rrsets\": [{\"changetype\": \"REPLACE\", \"name\": \"$full.\", \"type\": \"TXT\", \"ttl\": $PDNS_Ttl, \"records\": [{\"name\": \"$full.\", \"type\": \"TXT\", \"content\": \"\\\"$txtvalue\\\"\", \"disabled\": false, \"ttl\": $PDNS_Ttl}]}]}"; then
     _err "Set txt record error."
     return 1
   fi
@@ -107,7 +107,7 @@ rm_record() {
   root=$1
   full=$2
 
-  if ! _pdns_rest "PATCH" "/api/v1/servers/$PDNS_ServerId/zones/$root." "{\"rrsets\": [{\"changetype\": \"DELETE\", \"name\": \"$full.\", \"type\": \"TXT\"}]}"; then
+  if ! _pdns_rest "PATCH" "/api/v1/servers/$PDNS_ServerId/zones/$root" "{\"rrsets\": [{\"changetype\": \"DELETE\", \"name\": \"$full.\", \"type\": \"TXT\"}]}"; then
     _err "Delete txt record error."
     return 1
   fi
@@ -122,7 +122,7 @@ rm_record() {
 notify_slaves() {
   root=$1
 
-  if ! _pdns_rest "PUT" "/api/v1/servers/$PDNS_ServerId/zones/$root./notify"; then
+  if ! _pdns_rest "PUT" "/api/v1/servers/$PDNS_ServerId/zones/$root/notify"; then
     _err "Notify slaves error."
     return 1
   fi
@@ -144,15 +144,18 @@ _get_root() {
 
   while true; do
     h=$(printf "%s" "$domain" | cut -d . -f $i-100)
-    if [ -z "$h" ]; then
-      return 1
-    fi
 
     if _contains "$_zones_response" "\"name\": \"$h.\""; then
-      _domain="$h"
+      _domain="$h."
+      if [ -z "$h" ]; then
+        _domain="=2E"
+      fi
       return 0
     fi
 
+    if [ -z "$h" ]; then
+      return 1
+    fi
     i=$(_math $i + 1)
   done
   _debug "$domain not found"
diff --git a/dnsapi/dns_yandex.sh b/dnsapi/dns_yandex.sh
index 5fbb09d..318dee0 100755
--- a/dnsapi/dns_yandex.sh
+++ b/dnsapi/dns_yandex.sh
@@ -50,9 +50,9 @@ _PDD_get_domain() {
   __last=0
   while [ $__last -eq 0 ]; do
     uri1="https://pddimp.yandex.ru/api2/admin/domain/domains?page=${__page}&on_page=20"
-    res1=$(_get "$uri1" | _normalizeJson)
-    #_debug "$res1"
-    __found=$(echo "$res1" | sed -n -e 's#.* "found": \([^,]*\),.*#\1#p')
+    res1="$(_get "$uri1" | _normalizeJson)"
+    _debug2 "res1" "$res1"
+    __found="$(echo "$res1" | sed -n -e 's#.* "found": \([^,]*\),.*#\1#p')"
     _debug "found: $__found results on page"
     if [ "$__found" -lt 20 ]; then
       _debug "last page: $__page"