My friend is trying to make an account. He accidentally made one earlier using a friend's pass, but he wasn't able to access that account. He then made a new email and registered with that, using the account. The email address wasn't recognized when he tried logging in, so he tried using the key for his other email, after he got himself sent a new password. But after typing in the key, he got a "access key already in use", but when he tried again with his second account, it still said that it wasn't there, he tried registering that account, and it said the account existed. What should he do?