You have to put the .torrent file which you get with the "Download" button from the description pages of the torrents you've uploaded into µTorrent and "point" the download to the file or folder (aka directory) from which you've created the torrent.
Once having uploaded the original created .torrent file and uploaded it, just after having clicked the "Do it!" button, you'll be on that torrent description page. Later you can find it by either including dead torrents in the search or by your Profile. Click on your name in "Welcome back, …" below the menu bar to go there and scroll down to the bottom of the page.
The re-downloaded .torrent file will contain your secrete personal passkey, and only torrents with passkeys connect correctly to the tracker.
If you've added already the right .torrent file to your µTorrent (see in the lower µTorrent widow part under the "Trackers" tab) and it is downloading or "connecting to peers" 0% completed, try the following steps:
1/ Stop the torrent (do NOT remove)
2/ Click with the right mouse button on the torrent in µTorrent's list and select "Advanced" > "Set Download Location..." > navigate to the file location and confirm (Save) or (Select Folder).
3/ Right mouse button click on the torrent in µTorrent's list and select "Force re-check". The torrent should check to 100% and µTorrent displaying "Finished" instead of "Stopped" in the status column.
4/ Restart the torrent, it shall go to "Seeding" or at least to "Queued seeding"
The proposed QTM (Quick Torrent Maker) automates the torrent creation, upload, re-download and pointing to the files, thus makes uploading much easier. You might prefer to re-do the uploads with it, i/o following above steps.