I've just reformatted my iMac and installed Sierra 10.12.3 along with qBittorrent.
This is the first time I've used qBittorrent. Previously I've used Deluge.
When I added a couple of torrents for download in qBittorrent, nothing downloaded, despite having been active for a couple of hours. One torrent has zero seeds and 4 peers. The other has zero seeds and one peer.
Searching generates zero results, even when "All plugins" is selected from the drop down.
I'm only moderately tech savvy - I can use Terminal for very basic tasks only.