EXCEL Checklist_Intergrator.xlsx "unknown function" error

Hi everybody,
I’m trying to create a checklist for MSFS2024 using the SDK EXCEL Checklist Integrator (Integrator Excel File Overview).
TAB “Checklist.loc DATA” shows an error: “_xlfn”, meaning “unknown function”. I’m on the latest Office365, English edition.
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Any idea, how to fix this?

EDIT: I was able to get the VSTACK function working (I had an old license of Office activated instead of the latest 365).
So far so good, but then I ran into the next problem:

  • User guide, item 30 - “copy-paste the filled cases of the column D starting from D4” : here I got a #VALUE! error