Import/Export of CSV Data

[afruehstueck]

I'm attempting to import data because entering large amounts of history (switching from another app) is easier in CSV than it is currently in the app.
However, I'm not successful importing CSV files, either with "Import and Replace" or "Import and Delete".
A real example of several months of data edited in Excel gives a strange error: Future dates may only contain a note, no other symptoms. However, there are no future dates in the file.
I attempted to create a Minimal example of this error, but it gives another error: Text '1/1/2022' could not be parsed at index 0: 1/1/2022, at index: 0 (see drip_minimal.csv)
Could you elaborate on how to successfully import?
EDIT: sorry, just realized this is not the official repository.