I have eight Matter over Thread blinds motors (Eve cm-08-e) which I successfully added to HA using the HA companion app on an Android phone.
My issue is that some of the blinds motors seemingly randomly become unavailable in HA. This morning, 1 of them was unavailable, now it's 3 of them. Tomorrow morning, they might all be back online again.
Intriguingly, through the Matter screen in Devices and Services in HA, I am able to ping the blinds motors that are unavailable, so this doesn't seem like a networking issue. Rebooting HA doesn't seem to make a difference - an unavailable device will still be unavailable after reboot.
How would I start finding the root cause? Not sure what log files to look into and what I'd be looking for. Any pointers appreciated!