How do I enter last 4 digits of serial number for Nest doorbell setu

[ValMet]

Cannot enter the last four digits of serial number to add product to my Nest doorbell setup. What do I do?  It is older model system 

[Brad]

Hi there, 

I can imagine it has been an inconvenience, and I would love to look into this further for you. Do you have the original packaging by chance? THe QR code may be on there or you can find the serial number on the bottom of the device. Which Nest doorbell do you have? Please let me know. 

Best regards, 
Brad

[Brad]

Hi there, 

Just checking in to see how the conversation is going. Please let us know if you have any further questions or concerns. We'll leave this thread open for a little longer for follow-up questions and concerns. 

Best regards, 

Brad

[Brad]

Hi there,

Just checking in on this thread and the activity on it. We'll leave this topic open for another 24 hours in case there are any follow-up questions or comments.

Best regards,
Brad