[0.16.6] Server does not show up in Serverbrowser

[Cutemine]

hi, I'm trying to setup a server which is listed in factorios official server-browser.
However despite numerous attempts I can't get it to work.
The server itself is functioning as expected and can be connected to via it's IP address(or domain).

I'm wondering if the problem is just a configuration error on my part as I'm getting these in the log numerous times every few seconds:

Code: Select all

  4.874 Info HttpSharedState.cpp:125: Downloading https://multiplayer.factorio.com/create-game
   4.874 Info HttpSharedState.cpp:127: Status code: 401

Now the "Unauthorized" 401 error is what confuses me, as I'm providing my token in the config and I've triple-checked that it's the right one.
Any Ideas?