Error enabling SangomaConnect for user

The test user enables fine. The first production user throws this error when I click Save after enabling:
Undefined index: max_contacts
File:/var/www/html/admin/modules/sangomaconnect/Sangomaconnect.class.php:3317

I see one other post with this from four years ago, but no resolution.

More info: I was able to add the user from the Users module. The error only happened in the SangomaConnect module.