Sometimes, I join a game, and when I quit, I can't join another. It says 'Steam connect failed.' and then I must restart the game before I can play again.

 

And my classes don't save.

 

How can I fix these problems?

Bump. I need to fix these problems.. and sometimes when I enter a server I get Steam connect failed too.

Answer to the first question: ._.

Answer to the second question: Try to type "/uploadstats" (without quotations) in the console and press enter. If you're using EAM (Easy Account Manager), you'll have to always run it with FourDeltaOne. There's an option for that in EAM.