How do you unblock popups in Safari?

Open safari & its preferences > security > uncheck the box of block pop - up windows .This answer for your specified question .

But , if we take a different scenario , check the box of block pop - up windows that is always recommended to avoid pop - ups while browsing , we can stop pop ads partially .

Read this article : Stop pop-up ads in Safari - Apple Support

Open the Security tab of its preferences, disable that option, and reload the page which would normally produce them.

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