It does say 2.02, and I have a 2011 imac with El Capitan 10.11.1.
It always shows an error message saying a deficiency with Wine.
Hm. You should update your OS to 10.11.6 for the security fixes, but I really doubt this is what it causing your game issues.
Your system is almost identical to mine -- I have a mid-2011 21.5" iMac with the Raedon 5770M, and I'm currently running 10.11.6. Inventory and Clans have been working flawlessly for me thus far. Only thing I can think of is to try a full uninstall and re-install. I guess it's possible a file got corrupted somewhere in the update process.