It worked pretty well, however when I tried running it on two different devices (my pc and my smartphone) it didn’t work. It actually worked for less than a second, but then the app stops suddenly. I tried disabling the firewall on Windows, but nothing changed.
This video below shows exactly the problem I am facing:
The IP address shown in the video (192.168.15.5) is the IP of my phone, which in that case is the host.
You could probably try matchmaking services. These connect players over servers available across the country really. Try this video here, I’ve seen a small portion of it, but I don’t know if it might be of use. Also, Photon Pun is free as well, and it provides matchmaking services that are easier to set up for beginners. Matchmaking in mirror
If you tried all the obvious and it still doesn’t work.
Update your mirror asset to the latest (for me at the time of writing this is 32.1.3), then try using kcp transport instead of telepathy transport in the network manager game object.