What does add credential error mean?

I get this whenever I restart the game

Add credential error

An unknown error occurred. Please check if you have valid credentials on your device

OK

When I click ok the game starts normally

I’ve never seen that but going by the name I assume it is a log in issue where it is trying to identify your account. Have you mailed support about it?

No because the account logs in normally after I click ok and to tell you the truth I have gotten locked out of the account in the past following support advice! I was just curious as to what it means!

You can’t remember your password. If this is the case, simply reset it by going to the login page and clicking on the “Did you forget your password” link.