SO, I JUST LOST MY SERIES BECAUSE I COULDN'T LOCK IN MY CHAMPIAN! >:(

I was going to play another ranked game so I did. I was at champ select and it was my turn and i selected a champ. I clicked lock in but WOULDNT LET ME! I was in my series too! So it dodged for me and I had to wait 5 mins to queue up again. It did the same thing AGAIN! I LOST MY SERIES BECAUSE OF THIS! I am mad because I now have to wait 20 mins to play again and I losst my series. I fixed it by closing the client and started it again.