kicked out of champ select - now at 15min wait time [Client]

Hello, i have a bug to Report. When im in champselect, my time-Counter just falls rapidely and I get kicked. Due to this, i now have to wait 15min for 5 games which is really annoying and i hope that somebody might help me what is the Problem with my Client or can tell me if did i do something wrong. Thanks for helping me, itsMe