Method 'Range' of object'_Global' failed

Hi. I searched forum and internet in general for this topic and people seems to have same problems when trying to .Select something. My situation is different and I whould appreciate any help.
So here is the part of the code (user form button action) and the red row is where Error is popping out.

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Here are the cotents of ActiveWorkbook.Sheets("wqelmhakimaflnkgb").Cells(3, 2):
'Mr Kardinal'!$D$5
Here I should point out that Cells(2, 2), Cells(1,2) contents are $A$5 and $B$5

The thing I don't understand is: Everything works as it should when I write like this:

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And when debuging code with error, Watch for "ActiveWorkbook.Sheets("wqelmhakimaflnkgb").Cells(3, 2).Value" gives Type:Variant/String and Value:"'Mr Kardinal'!$D$5"
Please help me! (