GAC - unfair matchmaking

Yep. It’s trash. My last opponent was 11ml GP.  I’m 6ml. They need to fix it. 

Don't bother because any suggestions you have probably come with more problems than it solves. This has been discussed ad nauseum, accounts like that are either bad at the game or dont consistently play gac. Otherwise they would move up. I agree it sucks if youre the one they decide to play against, but at the same time if they didnt do any battles and you won you would return the crystals right? And if youre not consistently playing either why should you move up? Do the best you can do every match and eventually you'll climb the ladder. 

There is a reason they are on the same tier as you. They don't play much, chances are they won't attack against you. If they do bad luck, if they don't congrats free win. 

Matchmaking is based on your ranking, not the number of GLs, conquest and journey guide characters you have, nor your GP.