i think i got the saem thing happened to me, i couldnt join a game as it kicked me on repeat, until i finally got in, played the game normally(lost) and then in the next game(somewhere in the middle i saw the low-prio thingie when i pressed esc, and i didnt see that when queueing!) so i got punished midgame for who knows what ╮(╯-╰)╭
the game i couldnt join at first > 48887674
the next game i received a ban in the middle of a game > 48888691