Poly Group 500 Calendar registration failed via Zoom API connector

[PolyGroup]

Poly Group 500 Calendar registration failed via Zoom API connector. 

I tried deleting the profile and restarted but calendar also can't register.

Zoom API connector 5.8

Poly Group firmware 6.2.2.2

Anyone also experience this issue?  Thanks.

[CaseyO]

Does the service account you are using in the calendar integration area have appropriate permissions to the account associated with the Group 500?