torrent not registered with this tracker?

i'm trying to upload, but my tracker status keeps saying failure: torrent not registered with this tracker. I have uploaded but is not seeding. The little box beside torrent witch i'm tryng to seed is red. Can someone please help. I'm new at this.

when creating a new torrent u need to put on torrent properties->trackers the tracker's announce url which is https://www.tribalmixes.com/announce.php

If it doesn't help (or you did this way) try to download the .torrent file from the site, and start seeding using it.