ProfessorActually we use that DataSource too and I see the same issue. So I looked at the code and it's just calling the getSharePointSiteUsageDetail (7 day) GraphAPI and retrieving some raw CSV data. The report data looks screwed up to me though. Like all the Site IDs are "00000000-0000-0000-0000-000000000000" and the URLs, Owner Display Name and Owner Principal Name are long HEX codes. I don't have admin to O365 to check directly but I'm wondering if something is broken in the report and how long it's been like that.
