Having problems searching players online on Blacktop

So I just started playing black top online by myself a few days ago. I didn't have any problems. My friend and I started doing it together and it worked just fine. Yesterday, two of my friends and I started playing and when we search for a game, if won't find 3 players and we end up getting kicked out to the locker room. I don't get it because all my friends live local. They have good connection. Whats the problem? Please help.