diff --git a/.github/auto-comment.yml b/.github/auto-comment.yml
new file mode 100644
index 0000000..75e6ac5
--- /dev/null
+++ b/.github/auto-comment.yml
@@ -0,0 +1,18 @@
+# Comment to a new issue.
+issuesOpened: >
+  If this is a bug report, please upgrade to the latest code and try again:
+  请先更新到最新版再试:
+  ```sh
+  acme.sh --upgrade
+  ```
+
+
+pullRequestOpened: >
+  If this is a PR to support new DNS API or new notification API, please read this guide first:
+  https://github.com/acmesh-official/acme.sh/wiki/DNS-API-Dev-Guide
+  
+  Please check the guide items one by one.
+  
+  Then add your usage here:
+  https://github.com/acmesh-official/acme.sh/wiki/dnsapi
+
diff --git a/acme.sh b/acme.sh
index aaab210..512d57e 100755
--- a/acme.sh
+++ b/acme.sh
@@ -3417,13 +3417,13 @@ _regAccount() {
   if [ "$ACME_VERSION" = "2" ]; then
     regjson='{"termsOfServiceAgreed": true}'
     if [ "$ACCOUNT_EMAIL" ]; then
-      regjson='{"contact": ["mailto: '$ACCOUNT_EMAIL'"], "termsOfServiceAgreed": true}'
+      regjson='{"contact": ["mailto:'$ACCOUNT_EMAIL'"], "termsOfServiceAgreed": true}'
     fi
   else
     _reg_res="$ACME_NEW_ACCOUNT_RES"
     regjson='{"resource": "'$_reg_res'", "terms-of-service-agreed": true, "agreement": "'$ACME_AGREEMENT'"}'
     if [ "$ACCOUNT_EMAIL" ]; then
-      regjson='{"resource": "'$_reg_res'", "contact": ["mailto: '$ACCOUNT_EMAIL'"], "terms-of-service-agreed": true, "agreement": "'$ACME_AGREEMENT'"}'
+      regjson='{"resource": "'$_reg_res'", "contact": ["mailto:'$ACCOUNT_EMAIL'"], "terms-of-service-agreed": true, "agreement": "'$ACME_AGREEMENT'"}'
     fi
   fi
 
@@ -3503,7 +3503,7 @@ updateaccount() {
 
   if [ "$ACME_VERSION" = "2" ]; then
     if [ "$ACCOUNT_EMAIL" ]; then
-      updjson='{"contact": ["mailto: '$ACCOUNT_EMAIL'"]}'
+      updjson='{"contact": ["mailto:'$ACCOUNT_EMAIL'"]}'
     fi
   else
     # ACMEv1: Updates happen the same way a registration is done.
@@ -4019,7 +4019,7 @@ issue() {
       #for dns manual mode
       _savedomainconf "Le_OrderFinalize" "$Le_OrderFinalize"
 
-      _authorizations_seg="$(echo "$response" | _egrep_o '"authorizations" *: *\[[^\]*\]' | cut -d '[' -f 2 | tr -d ']' | tr -d '"')"
+      _authorizations_seg="$(echo "$response" | _egrep_o '"authorizations" *: *\[[^\[]*\]' | cut -d '[' -f 2 | tr -d ']' | tr -d '"')"
       _debug2 _authorizations_seg "$_authorizations_seg"
       if [ -z "$_authorizations_seg" ]; then
         _err "_authorizations_seg not found."