BAIS Bulk Account Invites Send

UPDATE: Matt reached out to me directly, apparently I received a wrong automatic message saying the app had no support. My issue has been solved and I have updated the review accordingly.

OLD REVIEW:
The app has no support at all. When you send them an email you get the following message:
As of Dec 2018, this email address is not monitored and will no longer create support tickets. For answers to commonly asked questions, please see our Help Center, community forums, and Shopify Partner blog.

The app has not sent an invitation to over 15000 of my customers.