RHEL first subscription what am I doing wrong

So I wanted to test out RHEL,
I created a VM without issue but now am unable to associate a subscription with the server.
The server registered fine and I added a trial subscription license for 30 Day Red Hat Enterprise Linux Server Self-Supported Evaluation ;
The license appears active but when attempting to associate the license with the server:
On the portal I get
No available subscriptions found.
On subscription manager CLI subscription-manager list --available
No available subscription pools to list

I can't believe it is this difficult to get a trial going what am I missing?

Thanks

Richard