[2019] Cant join custom map servers

As of a few days ago, Mordhau has stopped letting me join any servers running the custom maps at all.

If I attempt to join it says joining server for maybe 5 seconds at maximum then reverts back to the title screen.

I've attempted reinstalling, verifying game files, removing the modded maps from the manage mods section in an attempt to redownload but no success yet.

Any advice would be welcome.