Try checking the size of the .torrent file and the sizes of the cover files (images), usually when those files are excessively big it might cause this kind trouble.

Also, if you are using Firefox try to check if you have disabled the content blocking on the site.



Finally, the "unregistered torrent pass." that shows in the client is totally normal because you do not actually use the .torrent file that you created with your client, you have to use the .torrent file created by the site instead, once you uploaded the file that you created then  it will automatically download a new .torrent file from the site and that is the one that you have to use in order to seed.

If you are still having problems uploading, PM(Private Message) any user with green (administrator) or red (moderator) name.