If you are having trouble receiving upload traffic with the torrents that you have seeding, this is likely not because of a "flaw" in the tracker, but rather, is caused by not forwarding the correct port in TCP and UDP from your router through to your computer. See, without the port that your torrent client uses being forwarded through to your computer, you will end up with the EXACT issue that you are describing, where seeding becomes incredibly difficult.
Also, if you are using a VPN, you need to be sure that you are either using the port that they are forwarding (as a number of providers/servers only forward ONE port), or that you are using a server that forwards ALL ports. This is a very critical part to being able to seed.