React frontend not connecting to backend (403)

Thank you. By default Strapi is pre configured with three roles: Author, Editor, Super Admin.

Whenever I try to create a new role, a message says the Community Edition cannot support more roles.
If I try to remove or change existing roles which are unused, I get the same message.

The purpose of a frontend is generally to be public facing, therefore it is surprising not being able to configure a public role at all! And not even being able to test the frontend!

Is the only solution to use an Enterprise license?