Honestly, not sure. What you did looks close to what I’d expect reading the airvpn doc.

1. Is port 6881 something unrelated? I think only local ports go there (e.g. your webui)

2. obviously make sure you set the forwarded port in qbittorrent, then maybe try some external tool like ipleak.net which can give you a magnet link you can put in qbittorrent to see the reported geo location. Not sure if that perfectly vets the port you intend to use, though.

3. glueten->gluetun in depends_on

If you attach to your docker as you launch, you might see some helpful output from either qbittorrent or gluetun (I think the “-it” flags