an Error 50003, I can not get into the toon boom

I have a problem getting into the too boom premium, until yesterday everything was normal, but today when I went to get into the software he asked for the license. And now when I try to login with the email login it will not. Now it looks like this error 50003.
please help me.

The 50003 error is a generic error message which simply means “internal error”
so it could caused by anything. Please contact support, this may be due to some
security setting or program recently installed/modified on the system.