If you go to your house and look at your laptop, there is a menu there called "MYTDULife", in there you can change your profile picture. Mine rarely loads for me though so I've only been able to change it twice. I try almost every time I go to my house though. IDK what's up with it.
cheetah is correct. It's linked to the club servers which are down until they figure how to deal with the cheaters and glitchers. You know who I mean. The guys who are level 60 already and don't even have the own 3 cars achievement.
I have two autistic brothers; only one games, but he cheats like crazy -- Bangoskank