Plutonium

Resxt Thanks for that! But the zombies still are attracted to me, and seeing the "self.ignoreme = 1;" in the script suggests that it is enabled automatically, but zombies still attack me. I've tried to enter it like a command in every different kind of configuration, but to no avail. Is there something I need to manually enable?

Storm Dev

If you're using a platform like Steam, verify the integrity of the game files. Corrupted files can lead to connection issues.

Ensure that UPnP is enabled on your router. This can help with automatic port forwarding.
If UPnP is not working, try manually forwarding the necessary ports for both TCP and UDP. Make sure to restart your router after making these changes.

Assign a static IP address to your computer to prevent changes in the dynamic IP from affecting port forwarding.

And check game settings.