Tuya is an app for smart home control. It is often used by other manufacturers under licence, and renamed. Those manufacturers devices will usually work with the tuya app and then they work with home assistant via this component https://www.home-assistant.io/components/tuya/
If the Tuya component doesn’t work, there aren’t many other options if there’s no component for it, other than reverse engineering their protocol and making your own component for it.
With that said, I’d bet money that there’s an ESP8266 inside, so you can try the Tuya OTA flasher to re-flash with tasmota or something, or crack it open and reflash the old fashioned way.