ok. yours is the same problem as one noted previously here: https://forum.inaturalist.org/t/some-components-of-taxon-pages-not-loading/72242.
they’ve been switching that page to a new version of the API, and it seems like one of new API endpoints has some strange configurations that affects folks probably who aren’t going through the US Azure nodes. so the developers probably will have to fix the configurations.
if you want to see history and seasonality graphs in the meantime, you could use this tool: https://www.inaturalist.org/observations/compare.
or if you have a VPN, you could try to route yourself through the US, and that will probably allow you to see the page just fine.