Copilot Studio - failed to publish new agent

Hi Experts,

I am beginner of Copilot Studio. I wanted to subscribe to Pay-As-You-Go.  Recently I have subscribed Azure Subscription Plan. Under Power Platform admin centre have create billing plan for Copilot Studio with PAYG.

In Copilot Studio when I tried to Publish newly created agent I received "You currently do not have a user license that allows you to publish in Copilot Studio. Please contact your administrator to upgrade your license or enable the necessary permissions". 

Did I miss out anything? Am I required to have Copilot Pro ? 

Thanks in advance

Regards

KC