I am having the same issues. My Torrents has an upload speed while I download but immediately becomes 0kb once completed. I tried stopping them and restarting, recheck it and even using other clients, like uTorrent and my upload speed is always 0kb. Even though there are some upload speed (~30kb/s) while I download a file, my ratio is still 0.000. And now with my downloads completed it's not uploading anymore.

Any ideas as to why it only uploads while it is downloading?

When you download a torrent, your computer reaches out to other (seeder) computers, establishes a connection with some (but not usually all) of them, and you download different parts of your torrent from different places - each at different speeds - which are then added together to give you your "download speed" (and so long as there are seeders, and you're a leecher, this will nearly always be a number > 0).

Once you complete a download, you start being a seeder. You have no upload speeds until someone (maybe several people) connects and actually starts leeching the file - FROM YOU.

At any given time, I am seeding about 1000 torrents on multiple trackers (a few dozen on this tracker). At that same moment in time, typically only about a half-dozen are "active" - and even then, the speeds can be wildly different: one connection may be in the tens of KB/s, while other torrents the connection is in the tens of MB/s (I seed from a cloud-based system with measured speeds in excess of 10GB/s when not throttled)

My point is this: as a seeder, your upload speeds will appear only when a leecher is actually getting file contents from you... which will NOT be all the time, and may vary based on the capabilities of the leecher (in addition to your own limitations).

Any ideas as to why it only uploads while it is downloading?

hope for a reply. Thanks