Champion Select Bug... Again [CLIENT]

I queued again, thinking that this was a one-time problem. was wrong. Fucking happened again. The game will not allow me to lock in my champion. See attached video.

It's been a long fucking night of grinding ranked games with AFK's and trolls and I was ONE fucking win away from Gold 2 promos. Now thanks to this bullshit I'm 2 away and ready to fucking kill myself. Is there anything that can be done to fix this or give my LP back? Feeling pretty destroyed right now, honestly.