6E and automatic IP

I posted this earlier in the discussion forum by accident.  Here is the short version.  I replaced all my Eero 6 Pro with 6E Pro.  It didn’t go smoothly at first but eventually I got it done.  When I was finished my Eero network had selected 10.x instead of 192.x for the IP address range.  It is and was previously set to automatic.  I’m trying to figure out why this happened and if I should manually set the range to 192.

Thanks in advance!