Ops sorry I just noticed this message today. Looks like itch.io did not send me a message when you replied.
Im using those headers to prevent that:
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Methods: GET, POST, OPTIONS");
header("Access-Control-Allow-Headers: Content-Type, Authorization");
Single thread only since multi-thread will cause some bugs in Godot 3.X. Im using Godot 3.6-stable. I don't like the new Godot 4.x branch
I wanna first port my GodoRogue game to Steam first, then maybe I will port Coop Catacombs.