I only have one friend on the game. We started at the same time and every round we played we would challenge him to beat our score. Lately when I finish a round, the message I get is invite friends, and does not show my friend anymore. We still play each other directly and he is still listed as my friend in the game, but I can't send him a challenge. I can still invite him to a game, just no challenge. He still sends me challenges and they go through. I have even tried sending him a new player invitation Email, but even those don't get to him. Any Ideas? Most of the fun is sending challenges since wes live on opposite coasts in USA.