wrong message

[Polleke]

Hello folks,
I'm using Qbittorrent for many years. I works fine and no problems seeding and downloading. I'm happy with using it.
But there is one question I have: by all the uploads I made appears a 'wrong' (fout) warning and I can't figured out what that is.
Can some one tell me what it means:

[Peter]

Click one of these "Wrong" torrents, click Trackers on bottom and see status message.
It should tell you why its' "Wrong".

[Polleke]

The only thing I see is that some trackters are not working. Is that all?
I will remove them and see what happens.