Connect players through Facepunch.Steamworks

Options
Hi,

I tried to convert the SteamLobby stuff from BOLT to Facepunch.Steamworks but as auto matchmaker because I like it's design more than Steamworks.NET (more "csharpy").

All the lobby stuff works, creating, joining, chat etc.
I'm also starting a game server and it gets the public IP of my Router.
But when I try to connect the client to the endpoint nothing happens, just "retry connect" until Bolt fails and closes on the client.

Do you have any hint I can check I maybe forgot to do?
Maybe someone already created a working solution?

Regards,
Ole