Hello Salik,
We are sorry to say that an API is not shareable. It’s a piece of sensitive information.
Based on your provided screenshot, the error clearly shows that “You must enable Billing”. Also, provided related links to complete the steps.
As you mentioned, you already enabled billing. In this case, please contact Google Cloud Support with the screenshot and ask why you still getting the error?
We are sorry again to say that there is nothing in our hands to assist you with the issue as this is not our plugin issue. It’s all about the Google API issue.
Best Regards,
ThemeLooks Support Team