I wanted to test the AQARA HUB M3 last week, as this hub can be exposed via MATTER. Here are my thoughts 
:
I used a Zigbee device (an AQARA Plug H2 EU) and a MATTER Light Switch H2 EU for the test.
1. I added the M3 Hub to Homey Pro using MATTER. The hub was added, but it wasn’t recognized properly.
2. Any device added to the M3—whether Zigbee or MATTER—was exposed to Homey Pro as a MATTER device.
3. The MATTER network became unstable and unreliable.
Overall, my experience was quite disappointing.
