Book Reading Tracking
Not recoverable from the web — but probably still in your Drive
This page (?page_id=54) was never captured by any crawler, so its markup is lost.
It is worth knowing how it was almost certainly built: the site ran the Integrate Google Drive plugin, and its sibling page “The Isle” used that plugin to embed a Google Sheet rather than storing data in WordPress. A tracking page like this one very likely did the same — which means the actual reading data would live in your Google Drive, not on the dead website.
Search your Drive for spreadsheets from mid-2022 named around reading or books.