Just to clarify, you need to open the personalized torrent file that you download. It is different from your original torrent file. I'm using a different client, but I think the process should be the same. Here is what I do:
1. create torrent file and open it in your client to check it - it should go to seeding status
2. remove this file from client
3. upload to torrent site (TTD, Dime, etc.)
4. download the personalized torrent file, open it in your client and point it to the files - it should check everything and then show you as a seeder
Just make sure that you are using the personalized torrent file that you downloaded from the torrent site and not the original one.
Hope that helps - good luck.