the standalone torquemap page has the same issue. see: https://forum.inaturalist.org/t/map-animation-of-observations-over-time/1217/9. i don’t think it’s broken exactly. it’s just that Carto (the map tile provider in this case) is requiring an API key nowadays. (i think the Carto folks want to be able to track who’s using their tiles nowadays so that they can enforce a 5MM tile/month free tier developer limit.)
Happens to me in both Chrome and Firefox. I’ve filed an issue, but because year in review is mostly made for December and January, a potential fix would probably not be a priority now.
however, besides the year-in-review page, i’m not aware of anything that will automatically get identification counts for a series of days right now (because there’s not really an efficient way right now to retrieve this information for really prolific identifiers across more than, say, a month’s worth of days).