I am having exactly the same problem with my personal review for 2026 and for 2025 using Firefox, Brave, and Microsoft Edge - it has been happening for at least the last 3 days.
If this was the cause, that change was deployed less than 24 hours ago so I would expect that would only be responsible for problems in the last day or so. @SteveMcBill you report having problems for more than 3 days. I’d be interested to hear if you are still experiencing problems. If so, would you be willing to share your iNaturalist username here or with me privately so we can further investigate? Thanks folks and apologies for the issues