I don’t have Excel so I can’t test it myself. The example was contributed by someone else.
I looked through the code changes, but it’s mostly minor stuff, I didn’t see anything that I thought would break this.
I noticed that the examples I found on-line applied Cells to a worksheet which is retrieved from a workbook. But that wouldn’t explain why the old Suneido works.
Sorry, I’m not sure what the problem is.