I recently bought one of these Roller Blind motors from Zemismart. Pairing it to Z2M was no issue at all.
However I can’t figure out how to get HA controlling the thing. Pressing the open and close buttons do nothing. I have paired it with the included remote and that works fine but obviously I bought it to control through HA.
According to Blakadders Zigbee repository it is supported and the options for opening and closing appear in HA.
For anyone who encounters this problem. Here is how I solved it.
I bought a Tuya ZigBee Hub and added it to the Tuya app. I then added the blind motor as a sub device. From the Tuya app I was able to set the upper and lower limits.
After this I unplugged the Tuya ZigBee Hub and repaired the blind motor with HA.