I have left 2 bug reports.. I am having this issue several times.. its also random, I got kicked once for selecting shield summoner spell ??? wtf, got kicked several times when joining que or during champion selection when clicking to accept lockin.. it said it accepted my lockin but then I would get kicked and a message saying I did not accept match.. I clicked in as soon as it was available to click.. other times I waited some, does not seem to make a difference.
VERY VERY BROKEN AND ANNOYING PLEASE FIX THIS ASAP!! YOU HAVE MORE THAN A FEW PLAYERS UNABLE TO PLAY ANY MATCHES DUE TO THIS BUG!!!
I have not played in awhile due to toxic players/afk's/ people wanting to surrender 5 minutes into the match (Personally I don't think there should even be a surrender option as it encourages trolling and to not learn any teamwork as if you are forced to play the entire match out you learn to work with others as it stands now you get bad personality mix and they just feed/troll/afk and surrender) and if toxic players wasn't enough now you have a bug that prevents players from even getting into a match, if these things keep happening I won't be playing for awhile again.
I don't follow Esports as it is very unrealistic of the actual game experience of most players, I know you want exposure and such but pro circuit is not the same game we play, it may have been the first couple of seasons but now it is nowhere near the same.