Tuya has a developer platform : https://auth.tuya.com/?from=http%3A%2F%2Fiot.tuya.com%2F
Perhaps that might help to develop? connecting your app to their Cloud services should give access to all registered devices.
This might also be an option : https://docs.tuya.com/en/cloudapi/device_access.html
Also I have a dimmable white light bulb as well as an rgb dimmable bulb to loan if you need any…
