diff --git a/acme.sh b/acme.sh
index b5f80b3..b4974fe 100755
--- a/acme.sh
+++ b/acme.sh
@@ -4006,7 +4006,7 @@ issue() {
         _on_issue_err "$_post_hook"
         return 1
       fi
-      Le_LinkOrder="$(echo "$responseHeaders" | grep -i '^Location.*$' | _tail_n 1 | tr -d "\r\n" | cut -d ":" -f 2-)"
+      Le_LinkOrder="$(echo "$responseHeaders" | grep -i '^Location.*$' | _tail_n 1 | tr -d "\r\n " | cut -d ":" -f 2-)"
       _debug Le_LinkOrder "$Le_LinkOrder"
       Le_OrderFinalize="$(echo "$response" | _egrep_o '"finalize" *: *"[^"]*"' | cut -d '"' -f 4)"
       _debug Le_OrderFinalize "$Le_OrderFinalize"
@@ -6315,7 +6315,11 @@ _installOnline() {
 }
 
 _getMasterHash() {
-  _hash_url="https://api.github.com/repos/Neilpang/acme.sh/git/refs/heads/master"
+  _b="$BRANCH"
+  if [ -z "$_b" ]; then
+    _b="master"
+  fi
+  _hash_url="https://api.github.com/repos/Neilpang/acme.sh/git/refs/heads/$_b"
   _get $_hash_url | tr -d "\r\n" | tr '{},' '\n' | grep '"sha":' | cut -d '"' -f 4
 }
 
diff --git a/dnsapi/dns_clouddns.sh b/dnsapi/dns_clouddns.sh
new file mode 100755
index 0000000..31ae4ee
--- /dev/null
+++ b/dnsapi/dns_clouddns.sh
@@ -0,0 +1,197 @@
+#!/usr/bin/env sh
+
+# Author: Radek Sprta <sprta@vshosting.cz>
+
+#CLOUDDNS_EMAIL=XXXXX
+#CLOUDDNS_PASSWORD="YYYYYYYYY"
+#CLOUDDNS_CLIENT_ID=XXXXX
+
+CLOUDDNS_API='https://admin.vshosting.cloud/clouddns'
+CLOUDDNS_LOGIN_API='https://admin.vshosting.cloud/api/public/auth/login'
+
+########  Public functions #####################
+
+# Usage: add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_clouddns_add() {
+  fulldomain=$1
+  txtvalue=$2
+  _debug "fulldomain" "$fulldomain"
+
+  CLOUDDNS_CLIENT_ID="${CLOUDDNS_CLIENT_ID:-$(_readaccountconf_mutable CLOUDDNS_CLIENT_ID)}"
+  CLOUDDNS_EMAIL="${CLOUDDNS_EMAIL:-$(_readaccountconf_mutable CLOUDDNS_EMAIL)}"
+  CLOUDDNS_PASSWORD="${CLOUDDNS_PASSWORD:-$(_readaccountconf_mutable CLOUDDNS_PASSWORD)}"
+
+  if [ -z "$CLOUDDNS_PASSWORD" ] || [ -z "$CLOUDDNS_EMAIL" ] || [ -z "$CLOUDDNS_CLIENT_ID" ]; then
+    CLOUDDNS_CLIENT_ID=""
+    CLOUDDNS_EMAIL=""
+    CLOUDDNS_PASSWORD=""
+    _err "You didn't specify a CloudDNS password, email and client ID yet."
+    return 1
+  fi
+  if ! _contains "$CLOUDDNS_EMAIL" "@"; then
+    _err "It seems that the CLOUDDNS_EMAIL=$CLOUDDNS_EMAIL is not a valid email address."
+    _err "Please check and retry."
+    return 1
+  fi
+  # Save CloudDNS client id, email and password to config file
+  _saveaccountconf_mutable CLOUDDNS_CLIENT_ID "$CLOUDDNS_CLIENT_ID"
+  _saveaccountconf_mutable CLOUDDNS_EMAIL "$CLOUDDNS_EMAIL"
+  _saveaccountconf_mutable CLOUDDNS_PASSWORD "$CLOUDDNS_PASSWORD"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "Invalid domain"
+    return 1
+  fi
+  _debug _domain_id "$_domain_id"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  # Add TXT record
+  data="{\"type\":\"TXT\",\"name\":\"$fulldomain.\",\"value\":\"$txtvalue\",\"domainId\":\"$_domain_id\"}"
+  if _clouddns_api POST "record-txt" "$data"; then
+    if _contains "$response" "$txtvalue"; then
+      _info "Added, OK"
+    elif _contains "$response" '"code":4136'; then
+      _info "Already exists, OK"
+    else
+      _err "Add TXT record error."
+      return 1
+    fi
+  fi
+
+  _debug "Publishing record changes"
+  _clouddns_api PUT "domain/$_domain_id/publish" "{\"soaTtl\":300}"
+}
+
+# Usage: rm _acme-challenge.www.domain.com
+dns_clouddns_rm() {
+  fulldomain=$1
+  _debug "fulldomain" "$fulldomain"
+
+  CLOUDDNS_CLIENT_ID="${CLOUDDNS_CLIENT_ID:-$(_readaccountconf_mutable CLOUDDNS_CLIENT_ID)}"
+  CLOUDDNS_EMAIL="${CLOUDDNS_EMAIL:-$(_readaccountconf_mutable CLOUDDNS_EMAIL)}"
+  CLOUDDNS_PASSWORD="${CLOUDDNS_PASSWORD:-$(_readaccountconf_mutable CLOUDDNS_PASSWORD)}"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "Invalid domain"
+    return 1
+  fi
+  _debug _domain_id "$_domain_id"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  # Get record ID
+  _clouddns_api GET "domain/$_domain_id"
+  if _contains "$response" "lastDomainRecordList"; then
+    re="\"lastDomainRecordList\".*\"id\":\"([^\"}]*)\"[^}]*\"name\":\"$fulldomain.\","
+    _last_domains=$(echo "$response" | _egrep_o "$re")
+    re2="\"id\":\"([^\"}]*)\"[^}]*\"name\":\"$fulldomain.\","
+    _record_id=$(echo "$_last_domains" | _egrep_o "$re2" | _head_n 1 | cut -d : -f 2 | cut -d , -f 1 | tr -d "\"")
+    _debug _record_id "$_record_id"
+  else
+    _err "Could not retrieve record ID"
+    return 1
+  fi
+
+  _info "Removing record"
+  if _clouddns_api DELETE "record/$_record_id"; then
+    if _contains "$response" "\"error\":"; then
+      _err "Could not remove record"
+      return 1
+    fi
+  fi
+
+  _debug "Publishing record changes"
+  _clouddns_api PUT "domain/$_domain_id/publish" "{\"soaTtl\":300}"
+}
+
+####################  Private functions below ##################################
+
+# Usage: _get_root _acme-challenge.www.domain.com
+# Returns:
+# _sub_domain=_acme-challenge.www
+# _domain=domain.com
+# _domain_id=sdjkglgdfewsdfg
+_get_root() {
+  domain=$1
+
+  # Get domain root
+  data="{\"search\": [{\"name\": \"clientId\", \"operator\": \"eq\", \"value\": \"$CLOUDDNS_CLIENT_ID\"}]}"
+  _clouddns_api "POST" "domain/search" "$data"
+  domain_slice="$domain"
+  while [ -z "$domain_root" ]; do
+    if _contains "$response" "\"domainName\":\"$domain_slice\.\""; then
+      domain_root="$domain_slice"
+      _debug domain_root "$domain_root"
+    fi
+    domain_slice="$(echo "$domain_slice" | cut -d . -f 2-)"
+  done
+
+  # Get domain id
+  data="{\"search\": [{\"name\": \"clientId\", \"operator\": \"eq\", \"value\": \"$CLOUDDNS_CLIENT_ID\"}, \
+      {\"name\": \"domainName\", \"operator\": \"eq\", \"value\": \"$domain_root.\"}]}"
+  _clouddns_api "POST" "domain/search" "$data"
+  if _contains "$response" "\"id\":\""; then
+    re='domainType\":\"[^\"]*\",\"id\":\"([^\"]*)\",' # Match domain id
+    _domain_id=$(echo "$response" | _egrep_o "$re" | _head_n 1 | cut -d : -f 3 | tr -d "\",")
+    if [ "$_domain_id" ]; then
+      _sub_domain=$(printf "%s" "$domain" | sed "s/.$domain_root//")
+      _domain="$domain_root"
+      return 0
+    fi
+    _err 'Domain name not found on your CloudDNS account'
+    return 1
+  fi
+  return 1
+}
+
+# Usage: _clouddns_api GET domain/search '{"data": "value"}'
+# Returns:
+#  response='{"message": "api response"}'
+_clouddns_api() {
+  method=$1
+  endpoint="$2"
+  data="$3"
+  _debug endpoint "$endpoint"
+
+  if [ -z "$CLOUDDNS_TOKEN" ]; then
+    _clouddns_login
+  fi
+  _debug CLOUDDNS_TOKEN "$CLOUDDNS_TOKEN"
+
+  export _H1="Content-Type: application/json"
+  export _H2="Authorization: Bearer $CLOUDDNS_TOKEN"
+
+  if [ "$method" != "GET" ]; then
+    _debug data "$data"
+    response="$(_post "$data" "$CLOUDDNS_API/$endpoint" "" "$method" | tr -d '\t\r\n ')"
+  else
+    response="$(_get "$CLOUDDNS_API/$endpoint" | tr -d '\t\r\n ')"
+  fi
+
+  # shellcheck disable=SC2181
+  if [ "$?" != "0" ]; then
+    _err "Error $endpoint"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}
+
+# Returns:
+#  CLOUDDNS_TOKEN=dslfje2rj23l
+_clouddns_login() {
+  login_data="{\"email\": \"$CLOUDDNS_EMAIL\", \"password\": \"$CLOUDDNS_PASSWORD\"}"
+  response="$(_post "$login_data" "$CLOUDDNS_LOGIN_API" "" "POST" "Content-Type: application/json")"
+
+  if _contains "$response" "\"accessToken\":\""; then
+    CLOUDDNS_TOKEN=$(echo "$response" | _egrep_o "\"accessToken\":\"[^\"]*\"" | cut -d : -f 2 | tr -d \")
+    export CLOUDDNS_TOKEN
+  else
+    echo 'Could not get CloudDNS access token; check your credentials'
+    return 1
+  fi
+  return 0
+}