Please describe the issue you are having in as much detail as possible:
I and my friend both have BeamMP servers and we can´t join the server of the other person. Joining any other server is possible, but our own servers won´t show up for the other. Even when set to public the servers are not findable. We have tried to reinstall BeamMP but this didn´t resolve the issue. We can join with the internal ip but not the external ip. The person who ownes the server can play on it without any issues, but the other person cannot join. It used to work but then for some reason it stopped working.
Please provide any evidence or demonstrable content of the issue: