Can't join lobbies but I can host

[tight fjord]

I copy the lobbies code but doesn't give me the option to join in game. Yet I am able to host my own lobby.

[heavy tangle]

#known-issues vpn or asus gamefirst, or rarely, a router doing nat behind a modem also doing nat, u being able to host but not join == p2p packets getting lost somewhere between u and host.. try without vpn or even turn off internet and try phone usb tether or wifi hotspot, if it works on 4g/5g, u have router issue