Error unable to join game session

[mik9]

Can't join friends or friend to me, tried everything and then after around hour i randomly i joined a friend
https://plutonium.pw/docs/custom-games/ <- this method is not working

[Resxt]

This method is tested and working. You did it wrong or your router doesn't support it

[mizukki]

real helpful

[Resxt]

mizukki he didn't ask for help he just said it doesn't work so I told him it does. Can't help people magically with 0 info provided, common sense.

If you need help then say it and provide info