PawWriter

My fiancee and I both use DA torrents. My account is still active. However, his was deactivated without any warning. He simply went to bed one night and the next morning he couldn't even get onto the DA torrents site, not even the home page. There was also no email notification. His ratio is at 0.77, so we don't think that's the problem. I only found out that his account was deactivated when I searched for him in the member list.
Can someone please tell me why this happened?

Thanks.
PawWriter