Rust companion app admin setup?
if your hosted then your hoster will have to open the port
Ingame in console type app.port or app.info and it will show u the port that u need opened
mine is still loading and loading?

Try adding these command lines to the bottom of your server.cfg file save and restart server.

app.port XXXXX                            your game connection port +1 (default 28015) so put 28016
app.listenip XX.XX.XX.XX            your servers public IP

you will also have to delete and relink your phone with new settings.   

nashslash

Try adding these command lines to the bottom of your server.cfg file save and restart server.

app.port XXXXX                            your game connection port +1 (default 28015) so put 28016
app.listenip XX.XX.XX.XX            your servers public IP

you will also have to delete and relink your phone with new settings.   

I confirm, it works on my server.
Thank you

I don't use app.port in server.cfg or start.bat, i've only forwarded the port and it work...