Hello @MiriahB ,
Are you referring to a pop-up form or a landing page sign up form? They're two separate types types of sign up form, so you're not going to see a landing page "pop" on your website at any time. Landing pages are added to websites and elsewhere via their share URLs. When you add it to your website, you'll typically use it for a text, image, or button link. A pop-up form requires being coded into your website.
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