wp smtp插件升级后提示WP SMTP connection error 怎么解决？
WP SMTP connection error
Seems like there are some problems with the enterd information. Please re-check & re-enter it and hit the “Save changes” button.
We recently made some changes regarding how we save the username and password in the database, namely we are encrypting them, so that might be the reason for the connection error. Re-entering and saving them should solve the issue.