The Facebook login does not work
If you are ever unable to log in to the app builder via Facebook, please do the following:
Step 1:
Reset your password by clicking on the Forgot password link. Deposit your email address that you also use for Facebook.
Step 3:
You will be sent an email with an activation link. Open it and then enter your new password.
Step 4:
Now please log in using the login mask on the right (email and password).