Hello, I'm new to seedboxes and I thought you guys could help.

I've a torrent downloaded on my seedbox, and I want to upload to a private tracker.
My seedbox uses ruTorrent v3.4

1- I create a new torrent from my seedbox and I save the torrent file on my computer
2- I upload to the tracker
3- I download the torrent again from the tracker and I open it on my seedbox
4- A newly torrent is created on my seedbox, but it gets stuck at 0%
5- 0 seeds at the torrent I created on the private tracker

What to do? What I've been doing wrong?