Problem logging into account after being away for awhile

So recently I tried to log back into my LoL account to get back into the game after some computer problems which meant I quit for awhile. But the last match I had dropped cause my laptop decided to shut down in the middle of the match, and I didn't log back in to finish or see the end of the match. And I hadn't tried to log back in or updated my account for about 3 months. So today I try and reopen my account only to find that after I log back in I get a reconnect to match screen, 3 months after the match closed.

So I can't get back in to go play new games or anything.

Would like some help fixing.