You must seed every torrent you download for a total of 3 days (72 hours) or until its ratio reaches 1.0 or more.
You can seed for 3 days or reach a ratio of 1.0. You do not have to do both.
You do not have to seed the 72 hours continuosly but if you stop seeding for more than 7 days then you may get a Hit and Run warning.
It is not necessary for anyone to download from you, you just have to seed.
If you have seeding bonus points then you can "zap" a Hit and Run.
To keep a good ratio, and to avoid Hit & Run, you need to seed whenever you are online, not just for a short period after downloading.
Maximise your seeding time by configuring your torrent client to start automatically when you start Windows:
* In qBittorent the option to select is Tools > Options > Behaviour > Start qBittorrent on Windows start up
* In uTorrent it is Options > Preferences > General > Start uTorrent on system startup
Seeding will not always result in uploading but it will always earn bonus points that can be traded for upload credit.
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I hope that makes it clear.
That's not likely to happen so I suggest that you
1) Re-read the description to make sure that you are following all the instructions and suggestions, e.g. do a clean install.
2) Read the entire thread to see if you can get any help by reading about other peoples problems.
3) Other people have made this work so stop blaming the uploader and look to your actions and your environment for a solution.
4) Remember that a really detailed description of what you have done and seen, with screen captures if possible, makes it much easier for other users to help you.
5) If all fails then accept that is is difficult for anyone to fix your problems remotely and try another OS.