My page for my video game had a custom URL and user name that I set 5 years ago. Today I noticed that User name @PlayWhiteRabbit has disappeared from the page and the URL now reports a broken link. I also cannot set a new user name for the page. It says all names are taken.
I have page for a different game and that page still works fine.
I want to set the name of the page back to @PlayWhiteRabbit
Thank you for your help