I have a dedicated server through PulsedMedia running Ubuntu 18.04. I am using QB Pro and having issues with rtorrent. It will stop seeding public torrents after about 10 hours or so. Once I restart rtorrent, its back to business as usual. When the torrents do stop, they turn red but I do not have any error message.
As far as I know, all the ports are opened and no firewall is running.