Audit trail VBA

Hello,
I am not an expert on VBAs, so I could really use some help.

I have a workbook where I wish to track changes. The code works, but not on the cells that are merged (which most of them are). When I edit a joint cell, in the sheet log it will just register from EMPTY to (the change made). Can anyone help me with this? I use to different codes, one I thisworkbook and one in module 1.

In the modul section I have this code:
'Log Stuff Function

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And in the thisworkbook:

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