This bug happened to me before, the game freeze, both players can't do anything, whoever leave first will lose elo.
But today it's worse. It happened since the game start (before turn 1). After a while, my opponent can't wait anymore, but when his time run out, the game still not ended yet.
After that, I refreshed the page. It asked me to resume the game (even though my opponent is not there anymore). I chose to resume the game and still have to wait forever. So I quit and lost elo....
Just today, this bug happened 4 times now.
Look like I can't play in Quilingo properly until you fix the bug.