Previously I was using my Microsoft account in Turkish, but I set to English a few years ago. All applications were working as expected until I tried the built-in functions in Excel Online.
For example, I cannot use the SUM() function, but its Turkish equivalent TOPLA(). I tried to set the language again and cleaned up the cookies as suggested on SO, it didn't change the built-in functions. Maybe it only changes the UI language, which was already in English.
Even the arguments (e.g. number1) are shown in English, but the function name is in Turkish.
Is there a different setting for the language of built-in functions, how can I change it?
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