Champion select bugged (Client)

I was in Champion select and someone had invited me to a game. I dont had choosen my champ and want to click on decline but clicked on accept. after that i cant loggin Lux and i dont joined the other queue. the only thing i was able to do was to close the client. Maybe was it only 1 time i dont tried it a 2nd time cause this is a queue dodge and i dont want that i must dodge a 2nd queue. and sry for my english. i dont have a screenshot or something. I hope this helps and i did it right.