Telstra Home Automation Kit (Australia)

Hi there,
I have seen some of these around and interested to know if anyone has managed to get these to work with HA.
Looking at the specs its based on Zigbee (Unsure which flavour) and I have no idea if its an open or closed system.
https://www.telstra.com.au/smart-home/automation-and-energy-kit#specs

Any insight will be much appreciated.

I had a look at this when it first came out. I noticed was that it was just all rebranded products that you can buy off the shelf elsewhere. It’s possible that custom firmware has been used to make it all work seamless, but the monthly fee was enough to make me look away.