A Problem with a formula Excel

Hi all,

I would like to ask you if you have a clue what might be the problem with the formula in Column G in the attached excel file.

I created a formula in Excel 2016 which works just like it supposed to.

But when I open this file in Excel 2013 (on two different computers) the formula works as long as I do not change a value in any cell in Column A then I got error #ARG!

I do not even have to change any value. It shows me that error when I only enter a cell and press Enter without even changing any value.

Is that a problem with Excel version? I did not use any function that was not available in previous Office version.

I will appreciate any advice on that problem. Thank you in advance!