Anything new here? I recently acquired a Duux Whisper Flex and probably have an even newer firmware than the one that is (was?) compatible with the Tuya. My fan is only detected with the latest Duux app, neither Duux Gen 1 nor Tyua detects the fan after I reset the fan by holding the wheel for 5 seconds and the wi-fi symbol flashes.
As it stands now, it is not possible to get it into Homey, either via Alexia or Google Home. Alexia has support for Duux but not my fan despite them advertising the support on the box and online.