Are any sites you'd expect to be on paid-for Cloudflare also blocked?

I put https://www.gbif.org/ behind Cloudflare on the business plan, and so far (it's been roughly a year) we've only had a couple of reports of blocking, and both seemed likely to be caused by other users on the same IP scraping the site.

I can access gbif.org with and without WARP from here.

Sometimes sites like hubspot block me without WARP, but it's usually small blogs or technical project sites that give me trouble.

So it could have to do with free vs paid plans being more aggressive with default rules.