CAST HIGHLIGHT - Portal - Setup - Application Contributor not getting email invite to activate account

When a user is setup as an Application Contributor, the user is not getting the email invite to activate the users account.

Work Around / Action Plan

The issue occurs when the user is an application contributor without any application attached to the user.The work around is to Enroll the user  as a Domain Contributor Instead and the user will be able to log in. For this either

1. Assign your user to a specific application or
2. Change your user from an application contributor to a domain contributor (no application needs to be assigned then)

Also please make sure that the id being registered is an actual user e-mail id and not something like a distribution list id

Additional Resources

Getting Started Guide

CAST Highlight Troubleshooting Guides

CAST Highlight Product Documentation

Zendesk Ticket Number 

# 23016, 39055