How do I tell the Mudfish Launcher to launch Waterfox instead of Firefox?
This is a proxy addon and not used for the VPN?
Unfortunately it’s not officially supported by Mudfish yet. As workaround you should use one of methods at Unsupported Games. And if you want to see it officially at Mudfish, please send me some game packets using Packet Capture with Mudfish link while playing the game with Full VPN mode.