How to get API Key to activate the JupiterX theme

I just purchased the JupiterX theme but it won’t let me fully activate it without an API key.

The API Documentation is confusing:

I don’t need to register an app, just want the theme to work. Can someone clarify the step in laymen’s terms?

Thanks in advance.

Maybe you need Purchase Code? That is what are some themes asking for.

Thanks all.

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