In Marketing -> Websites click the site, then choose Delete website in the top bar's three-dot menu - or switch to Dashboard, open Settings and use the Danger zone at the bottom. Deleting needs the Websites delete permission (admins and managers by default).
The confirm card names the site and its public link. The site leaves the Websites list, the public link shows a neutral "not available" page, and the draft, its pages and its versions move to the trash together.
The trash icon at the top of the Websites list opens Recently deleted - every site still in the trash with the days it has left; the phone has the same icon on its Websites tab. Restore (the Websites edit permission) brings it back in one tap - drafts, versions, its own forms and booking pages, its tables and records and the public link come back as they were. A site that was live goes back online when its published version is still there; otherwise it comes back as a draft to publish again. After 30 days the site is purged and the link is released.
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