This is clearly broken, it shows "3 blocked" even as uBO is reporting 89 requests to 34 different domains blocked. EDIT it's below the fold: "Some browser/blocker combinations may affect results. If uBlock Origin breaks the test, allow adblock.turtlecute.org."
To allow their site, they suggest you add `@@*$redirect-rule` to `My filters` in the uBlock origins settings.
Went from 5% to 84% after I made the change.