May I use any bittorrent client?

Yes. The tracker now updates the stats correctly for all bittorrent clients. However, we still recommend that you avoid the following clients:

BitTorrent++
Nova Torrent
TorrentStorm
These clients do not report correctly to the tracker when canceling/finishing a torrent session. If you use them then a few MB may not be counted towards the stats near the end, and torrents may still be listed in your profile for some time after you have closed the client.

Also, clients in alpha or beta version should be avoided.

问答这里好像又允许使用，所以有点迷惑