Aright, thank you for the feedback. I'd be very happy to hear further updates about a solution!
Ah sorry.. it does.. the page shows up after I enter the key and then I click "Add game" not after "Add new game"
once I click add new game it says:
It happens in all servers but some last more than others.. only two actually that last longer (TG arena & TG battle).. also, why steam doesn't accept the serial key?