My League Wont get out of a non existing game.

Today i wanted to do a 1 vs 1 against my friend,after we chose our champs,We couldnt get on with the game.There was just standing,the fight will begin soon infinitly long,even for my friend.When we waited 2 minutes we decided to press the end button in the left hand corner.And we got out.after that i wanted to do a bot match.There was an error,and something had been sent to the server.Online didnt work too.I thought maybe restarting the game will fix it.But when i entered my account,There was a note saying:you left an ongoing game,Please Reconnect.When i pressed the reconnect Button,nothing happened.And now my league doesnt work,because it wants me to connect to a non existing game. I need help,because my league is now as good as Disabled/unplayable.Also sorry,my english isnt verry good.

Thanks in Advance, Stirbundzappel :D