Lost google home network after changes to R7000

Here is an update, but first a sincere thanks for the suggestions.  This is my first time posting here and I'm impressed with the depth of knowledge and care shown by the participants.

So, previously I had verified that my main Google Home speaker (a non-mini model), did not restore access to my wifi after power cycling a few times.  While fearful that I might need to reconnect all the other devices if they weren't working properly because of the network changes, I decided to try to delete and reconnect the Google Home speaker and see what happened.  It looks like doing that was enough to get access to the lights and resume normal behavior.  I have a handful of minis that I hadn't bothered to fiddle with, and figured I'd try the same thing.  However, I didn't need to as power cycling those has restored their connectivity.  So, using the R7000 as an access point seems to be working fine, with the only downside being that my auxiliary house network is part of the main building's network.  That is much less of a big deal than the Google Home not working so I'll probably leave things as they are for a while.  As a back burner project I'll try to learn more about switches and perhaps eventually try to use one to isolate the two networks from each other.