I had this problem too. I uninstalled AN225 and then followed this to reinstall the special WASM addon (from xbox store not MSFS marketplace). Now it works properly.
FWIW although the door takes a while to fully operate when set to realistic, almost instantly you start it there’s visible movement at the front from outside, so if you’re sitting there staring at it not moving is not you that’s confused but the sim it’s broken.