Cannot Edit the Address Book in FAX Utility
If you cannot edit the address book in FAX Utility, it could be caused by the following. Follow the instructions in "Remedy."
Cause
Access to macOS "Contacts" may not be allowed for FAX Utility
Remedy
Allow access to "Contacts" for FAX Utility.
(1) Open [System Settings] in macOS → click [Privacy & Security] in the sidebar.
(2) In [Privacy], select [Contacts].
(3) Turn on [Canon FAX Utility].