Overwriting VBA file with new data

Hi,

I have this original file with codes which I used earlier to run VBA to analyse data.
However, when I changed the data, the analysis completely changes and I am unable to get the desired result.

I also tried to add icons to the Quick Access Toolbar (under Macros and selecting few macros) so that I can using a button run my analysis.
When I do this, the body of the analysis gives all wierd results. Looking further I found all the Application.WorksheetFunction does not execute and the result are blank cells.

This is not good for me since I have a code that works just for one set of data and not for the other.

Can someone please help?

Many thanks in advance.