Historical currency in Numbers not working correctly

I have a spreadsheet that tracks stock values in their “native” currency and also in Euro, using yesterday’s closing price, via CURRENCYH to make the conversion. In the last few days it is giving an error that the date (yesterday) is invalid or in the future. I have to go back 3 days to get a reading. Note that I do not change the format of the date cell; in fact, I use (TODAY)-1 to get yesterday’s date, and (TODAY)-3 to get a valid reading.

Also, I’ve indicated this happens on my MacBook Pro (because I have to select something!), but it is also happening on my iPads.