Let's try this again.
I've been trying to install my Nest Hello and always get errors NC022 or NC023. The doorbell is about 2 feet from the hub so connectivity shouldn't be an issue. I've never had issues with other Nest products, some of them are 30 feet away and connect fine.
I apologize for my late response and thank you for all of your patience while waiting for a reply. I can definitely understand how frustrating your situation must be, but I wanted to make sure that your issue was addressed. Do you still need help with this issue? I know that there's been a delay in response since you posted.
Please let me know if you need further assistance.