peybax
You should change port to something other, Check nat-loopback settings in your router (If the server is running on the network where you play) Check your profile on this service to see if it is linked to your Steam profile and if you are the owner of the game, in your case: https://forum.plutonium.pw/user/peybax/edit (You need this for permission to create server keys) Check if you really have a public IP, not every ISP gives it automatically. For example, you can look in the router, in the settings, which WAN address it has, if it is local or public.
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Chochrun
@Chochrun