SharePoint home page error: can't reach this page

[Cathy_in_Maine]

Hey Everyone -

I'm a rather new Microsoft 365 SharePoint admin (but not new to IT) and I have created four SharePoint sites for my nonprofit organization.

One of the sites is giving me trouble however. All of the pages work and users are able up upload files and view the pages. The one BIG exception is the home page where an error occurs for any user from any location - including me, one of the owners:

Hmmm… can't reach this page

It looks like the webpage at https://RemovedForPrivacy.sharepoint.com/sites/MFP-PreventionEducation might be having issues, or it may have moved permanently to a new web address.
ERR_INVALID_RESPONSE

I tried changing the name of the site by adding the dash and am getting the same result. Then I tried to change it back to what it was (no dash) and I'm getting "name not available." So my question is twofold:

1. How do I troubleshoot this error?

2. How do I get the original name back for the site?

Thanks all -

Cathy in Maine

[#2]

Hey I figured it out! At least the first part:

The user, who is an owner, accidentally deleted the home page. This article was super helpful - I wanted to post this in case someone else comes across this issue - you have to restore the page:

Restore items in the recycle bin that were deleted from SharePoint or Teams - SharePoint (microsoft....

It's all fixed - EXCEPT - I don't know how to get the hold name back on the site, so if anyone has any ideas let me know. It still says the name isn't available even though it isn't in use.

[#3]

@Cathy_in_Maine 

SP sites are deleted fully 90 days after you press delete in SP admin center. Until then you can't use the name of deleted site. You can see deleted sites in "Deleted sites". To fully delete them before 90 days period a PowerShell command needs to be executed:

First connecting to SPOService:

Connect-SPOService -Url https://something-admin.sharepoint.com -Credential username-admin@something.onmicrosoft

Then deleteing the site:

Remove-SPODeletedSite -Identity https://url-of-the-site-you-want-deleted

Thanks for the hint about deleted home page!