How to set up a retro in 2023 (IIS) (Nitro HTML5) - (Part 1)

[EngeldesTodes]

Having issues with teh WSS sockets any advice it saying configuration error and show on the dev console that says

nitro-renderer-493a6bde.js:103 WebSocket connection to 'wss://ws.vortexhotel.co.uk:2096/' failed: any idea or help please