Seems like you looked into the wrong unit. The 60H does offer VeSync integration via there app.
If its not working i will look into flashing it with ESPHome / possible replacing the integrated controller with a Esp module.
I also dont unterstand the current limitations and where they are from. Seems like we can only get one controllable “output” (light or humidifying or display) to work? All of them together make issues?