I had their A10 for a while and it definitely is an impressive unit. I'm sure the T8 is similarly great.
While I didn't experience the same thing as you after power outages, I do remember issues in general back when I had a MESH setup. Spent a lot of money on a well reviewed system, it worked great most of the time. But little problems kept popping up and I felt like an IT guy in my own home. Which is not what I'm looking for.
I swapped it all out for Unifi equipment and couldn't be happier. It's expensive but not that much more than other quality "consumer" level gear. My uptime is currently in the several month range with literally zero issues, and the only reason it isn't longer is that I rebooted it myself when messing with the app.
Just something to look in to if you find yourself frustrated with your network like I was.

