A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
It's possible that the issue is related to the update from 32-bit to 64-bit, but it's difficult to say for sure without more information. Could you share us a test file to reproduce your issue?
For sharing a sample workbook, upload to OneDrive or any other cloud drives. Then post a link here.
You may try running the code in a new workbook: Create a new workbook and copy the VBA code and button over to the new workbook. See if the code runs properly in the new workbook.