It's possible he thought he bought the account from @Something Fishy and was just trying to log in.
Um... I must admit that I'm at fault here. I sold him a package that included the Brooklyn Bridge, Something Fishy's account, and the digital rights to Dan's first Tweet. I told him that something fishy's password is Omega3 (chap?), and that the Brooklyn Bridge is getting shipped via the UPS method, so he should wait patiently for its delivery.
I was paid $1.5 million and 10 packages of pacifiers (that should be a hint to Chap's real age...).
Sorry guys that I pulled this one, I was really stuck. Likes have been hard to come by recently and my kids haven't had a good meal in weeks.