FIX: Error : Peer certificate did not match expected CN=

hello
i add this code in class-smtp.php in line 169 and next in 369

syntax error

Here is the correct code for that: https://gist.github.com/slaFFik/c1d7d4249f47da7195fb973109952090

Put it into your functions.php of your child theme OR in a separate plugin of your own.

Why don’t you add this as an option to your plugin?

Because it’s better to fix server misconfiguration, than bypass it.
We don’t want to provide official way to lower your security.