Are external user connections not allowed connection to the powerserver application with the Developer's license for powerserver?

Users on the domain are able to connect without issue to the same powerserver application.

I have a powerserver application being hosted on an Azure VM in IIS.  We are using Azure AD Open ID for authentication of the application.  When a user outside the domain attempts to connect to the application, the user gets a message that they are "Unauthorized.  Please contact the application distributor for more information. (Web API: [company domain]/api/ServerApi/CreateSession)"  This occurs after the user successfully authenticates with Microsoft.

Looking at the connection log info in azure for the azure application, there is no log of the attempted connection by the external user.

As far as I can tell, there is no reason the external user should not be able to connect.  So, I was wondering if the fact that we are still testing using the developer's license is the issue?