I couldn't assign blockers and your system made me time out through three time outs. I restarted the game three times and it still wouldn't let me assign blockers. Your system also doesn't download the log files, so I can't upload those either. This has happened multiple times and the opponent didn't have anything to make any of their creatures unblockable.

I was playing against a Kotis, the fangbearer player with my Galadriel, gift giver deck.