FYI People that are having issues with the recent upgrade to V3 a lot of people are having issues with the trackers not connecting. Meaning your torrents won't download.
The solution found and at least what has worked for me.
- Copy your torrent magnet links to a notepad
- Make note of any custom setting you have "blacklist, maximun seed time, etc"
- Turn off the docker
- Rename your transmission-home folder to transmission-home.old
- Restart the container and let the folder recreate itself
Most of the steps are optional, you can turn of the docker and delete the folder if you don't have custom settings like me
You can follow the github problem here
https://github.com/haugene/docker-transmission-openvpn/issues/1507