Did you test your gluetun setup manually and made sure it generally works (e.g. by setting up another container that is connected to gluetun, go into the shell and try to ping a public service, that you’re sure isn’t blocking requests from VPN users)?

If it does work and only qBittorrent can’t connect, it could be due to the trackers blocking VPN users. I’m not torrenting but I’ve read about that in the past.

If you were able to get such an absurd amount of money out of it, you definitely didn’t pay the people who did the manufacturing and mining etc. enough for their work. If you did, would wouldn’t have become a billionaire in your lifetime.