Variable amount of credits | WordPress.org

I am using the Pro version. Because I was neither able to find a support link in the plugin nor on your site after signing in I am asking here.

I am on the Queries tab and have limits enabled. I see this message:
“If you want to apply variable amount of credits, click here.”
The link points to your website, where the free and the pro version are compared.

The license tab indicates that the pro version is active. Other pro features such as content-aware work.

How can I can apply variable amounts?

 

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