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If features on a webpage don’t work in Safari on Mac
If features on a webpage don’t work, options that help Safari handle special content may be turned off.
Make sure the webpage is open.
In the Safari app
on your Mac, choose Safari > Preferences, then click Security.
Make sure the Enable JavaScript checkbox is selected.
Click Websites.
On the left, click Content Blockers.
Make sure Off is chosen in the pop-up menu next to the website.
On the left, click Pop-up Windows.
Make sure Allow is chosen in the pop-up menu next to the website.
See alsoBlock pop-ups in Safari on Mac