Clone of "GovAuctions" from 3 weeks ago? https://news.ycombinator.com/item?id=47662945
I hope you're adding some fictitious entries (https://en.wikipedia.org/wiki/Fictitious_entry) to track where those scrapes might be going.
Most of that is tends to be over pricing or Next.js, when there's probably loads of quietly happy people using it, but... Those people are quiet, so it is hard to tell.
But they'll absolutely have to be gutted and remodeled.