Hi @Susan Dodds,The default SharePoint root site is a communication site. The root (top-level) site for your organization can't be deleted. If you have a different site that you want to use as your root site (a communication site or modern team site that isn't connected to a Microsoft 365 group), you can replace your root site.
After you replace the root site, the URL of the replaced site will be automatically modified to https://xxxx.sharepoint.com.
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