KF Really stucked with "Steam must be runned ect..."

So...First of all ty very much for ur support. So I bought KF with DLC during steam sales...and I was disapointed with one problem. I can`t play online and customise my personage ect... Looks like steam not working but it works and it shows that I`m playing KF... I really stucked with this problem. Readed a lot of advises on forums... and nothing helped. Reinstalled steam...KF...checked cash...deleted some files in steam main library... so nothing helped... PLEASE RESOLVE MY PROBLEM! CUZ I REALLY LIKE THIS AWESOME GAME!!!