Hello,
It feels like I have answered this question over 100 times by now. Not your fault!
Your connection, the speeds, connectivity etc. has nothing to do with the site or tracker. We don't limit, block, restrain or force anything from our side.
Question number one is always: are people actively downloading what you are seeding?
And if you google there are a billion guides on how to portforward or configure your torrent client.
I would send a message to your VPN provider to make sure they are not blocking anything.
Also this guide might help
viewtopic.php?f=83&t=1979