Allow button clickthrough once form successfully submitted

Can you help please? I’m trying to make it so that the popup is no longer triggered once the user completes the popup gravity form the first time, and allows future clicks through to the button link.

I’m using an embedded Gravity Form in the popup that’s linked to a MadMimi list. Once the user submits their email the first time, we don’t want it to be triggered again and the user should just be able to click the button to go to the page.

Thanks in advance!

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