AD410 Speaker/Tone Issue

[DurandClan]

Just installed an AD410 for my neighbor. Everything works fine other than the speaker/tone at the doorbell. Video is fine, the mechanical chime works properly and a press of the doorbell triggers SmartHome app notification as I would expect. Within the SmartHome app, in the Settings option for the doorbell tone & volume, we get the following error.

'Doorbell tone and volume failed to retrieve configuration'

So the visitor gets no audio from the owner through the speaker and when the button is pressed, no tone is produced at the doorbell itself. The mic does work on the doorbell.

This replaced a previous smart doorbell from alarm.com so this type of doorbell has worked with this setup previously.

Any thoughts? Defective doorbell, etc.?

[Revo2Maxx]

Would try factory reset

[DurandClan]

Would try factory reset

Did this already

[DurandClan]

any other ideas?

[Revo2Maxx]

Bought new or used? Amazon or Amcrest?