You’re correct—there is no fixed limit on the number of hosted FusionAuth instances you can have.
However, since your account is on invoiced billing, new hosted deployments cannot be created directly through the Account Portal. That functionality is only available for self-serve billing accounts.
Next Steps
Our Customer Success team will reach out to you via email.
They’ll help provision the additional non-production instances and add them to your existing order.
Once that’s complete, you’ll have access to the new hosted deployments without needing to manage them through the portal yourself.