you'll have to take this to their support and not here. there's nothing much we can do about a service problem. just make sure that you're not hacked. oh, read too quick didn't see that it was just a text error.
Make sure to enable 2FA if you haven;t already. Your printscreen doesn't seem a error like philipma1957 (which was a computer hick up).
To me it seems the 500 transfer was a manual transaction.