Personally I’ve had a heck of a time with this as well.
- Currently I have a separate Google account created and share each my own and my wife’s location with this account (worth noting I do NOT have 2FA on this account - and further that this is the account I’ve setup in configuration.yaml)
- I downloaded a copy of firefox and installed the cookie getter extension (per instructions here: https://www.home-assistant.io/components/google_maps/ )
- I logged into google w/ the ‘separate’ google account and went to maps.google.com in Firefox.
- I then used the extension to download the ‘google.com’ cookies.
- I then saved this file per the instructions and copied into my config directory on my NUC running HA
- I then rebooted and it came back ok
Fingers crossed that 1) this keeps working for me and 2) that it works for you too!