Wordpres password as plain text in email

No, WordPress passwords are not stored in plain text. They’re stored as hashes generated by an old version of PHPass, which I think does multiple rounds of salted MD5 hashes. You cannot extract the original password from this, by design. See Why shouldn’t I store passwords in plain text? on Information Security StackExchange. If you … Read more

Add a custom user meta data on registration based on user email

If this is being run when you register a user, then you could just grab the email used in creating the user as it is contained in the second argument that is passed to user_register which is $userdata. See https://developer.wordpress.org/reference/hooks/user_register/ Note that to provide you with an example that would actually result in something useable, … Read more

Change Registration Error Message

To change the error message, you can try modifying the code in the plugin that generates the error message. You can also try modifying the WordPress core files that handle user authentication, but this is not recommended as it may cause issues with your site and can be overwritten during updates. You can try modifying … Read more