Deconz/Phoscon and Tuya Smart Air Sensor

I’ve got the Tuya Smart Air Sensor (via Aliexpress). When putting it into learning mode (press button for 5 sec, then the light flashes rapidly), the phoscon app does not appear to bind to it. I am running the latest deconz on a Raspberry 4, and all other sensors (motion, temperature, water leak) are recognized without problems. Is there a solution for the air CO2 sensor?

I’ve never gotten this to work. Someone had written support for it along with a pull request, but it was right around the transition to DDF, so it was cancelled, I believe in favour of waiting someone to write a DDF for it instead. I no longer know where to find or follow its status.