Hi @tingkong so
Have you tried to save your file as .xlsm?
Besides, does this issue occur before?
If conditions permit, it is recommended that you go to another computer and use a different version of Excel to test it.
I download the template, and save it as a .xlsx file, there is no error message like yours. (Because I'm not a professional in financial return, I didn't enter much data. In My environment, I use Excel for Microsoft 365, Version 2311 (Build 17029.20108))
From a software perspective, it is recommended to update Office to the latest version first to have a check at present.
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