I was wondering how to completely erase old data of deleted users and email addresses?
For example, I used a certain username/email address before. Then when I tried registering as a new user, I get the error saying username is taken or email address is already linked to an existing user.
I tried purging my data base via my caching plugin but didn’t work.
I only have WP Admin access and got no access to the website’s cPanel and mySQL (if ever that was necessary).