Home Wifi not added to saved network on Android

I had the same problem with a pixel 3a.  Tried lots of things (including factory reset of the device, was not willing to factory reset the phone either (cc @Katecreatesit ) but i did get it to work without doing that.

The following worked for me:

using a non-pixel phone, login to app as admin and create a NEW network with
1) 5GHZ  (ONLY)
2) WPA2 (ONLY)
3) A password that does not use commas (“,”) .

I was then able to add THAT network to all devices and it was able to remember them normally.
(i then deleted original network)

I did not bother to go back and try to isolate which of the above 3 things really were required for this to work, but it did.