Can't join to my main account!

[Mrjohhny]

So i am trying for the longest time to join to my account with facebook, it says App not Setup: This app is still in development mode, and you don't have access to it. Switch to a registered test user or ask an app admin for permissions.
I really want to get that acc back, is there anything i can do?
Thanks.

[Karin]

Contact Support, [email protected], and ask for help with adding an email to your account for login to use for the app.