this is my first post and I am very happy to join this wonderful community. Also i need to apologise for the ircorrect language, but english is not my first.
http://i.imgur.com/OYhDslB.png

I am running PlayOnLinux on Ubuntu 14.10 with PlayOnLinux and I have a problem occurring when i try to run one of the Steam games. I add screenshot to make you sure that I do own the game and not trying to make you help me pirate the game.
http://i.imgur.com/k6jrWwo.png <--- [bigger resolution]

The game runs pretty much smoothly, with the exception of SAVING PROGRESS feature o.O. I cant actually unlock new heroes nor can i get the achievements, all due to game client interpreting my game files as modified.

http://i.imgur.com/H7fpOCy.png.<--- [bigger resolution]
My friend using the same PlayOnLinux application installs everything as default on his Debian distro and he gets no problem at all with it whatsoever.
I can join multiplayer game with no problem, but the lobbies are listed as using different checksum (that's why they are marked YELLOW)

http://i.imgur.com/EGt7W0H.png <--- [bigger resolution]
I have checked and every lobby has the same checksum, i am the different client for sure. I dont know what more info i can provide you, if you have any ideas what can i do to repair or at least diagnose this problem, please feel free to ask.
cheers,
Niedzwiedz