This is an error they are working on fixing. Fortunately, there's a way around it. Follow these instructions and I gurantee you will have 10 times less this problem.
Choose ranked match, then custom ranked match. Change your filter to whatever kind of game you want to play. Hit A and it should say refreshing. After a couple of seconds, hit X and the matches will show up behind "refreshing". Choose whatever match you desire and WALA.
You will get the hang of when to press X