Cannot switch army!:(

I have installed the new Steam version and Eastern Front, the game works fine except one thing i can't play with the Ostheer and the Soviet Union, becuse when iam in the lobby i Can't switch for the Ostheer or SU they are not locked just i cant click on them!:( Please help me!

You should look in the recent post and topics on this forum, this is already an ongoing debate.

The TLDR version is: the game is bugged since the last Steam update. Devs are trying to fix.