There is an easier solution.
https://www.googlenestcommunity.com/t5/Security/Nest-Connect-out-of-box-error-NA013-4-7-while-adding/m-p/613393/highlight/true#M6873
Crouton’s solution worked for me and was also confirmed by my friend on
the Nest team:1. Remove the Nest Secure devices (base station + sensors)
from your account in the Nest app2. If you have a Nest Doorbell, remove
that from your Nest account as we...
I have the same issue as everyone else. Have a friend on the extended
Nest team at Google who narrowed the issue down in a specific area and
is trying to get to the right people internally.