If you haven't already, you might be able to try contacting Atlassian Support directly to see if they are able to restore a deleted space.
I'm not sure if this is something Atlassian supports or not, but it's worth a shot. As far as I know, once a space is deleted, it's gone forever. That's how it works with Server and Data Center, so I imagine it's the same scenario for Confluence Cloud.
Thanks everyone for answering last week’s question. The winner of the random drawing from those who commented is: @LarryBrock I’ll contact you separately with your prize details. This wee...
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