If the WD Elements drive shows up on Windows normally but doesn't appear on the Mac, the problem could be with the connection and your Mac computer.
What does it mean when you say the external hard drive not showing up on Mac? To make it clear, if the WD Elements don't show up in the Desktop or Finder's sidebar, it could be caused by incorrect system settings. If the external hard drive doesn't appear in Disk Utility even if you click View > Show All Devices, then the drive is not recognized, you should check the connection first. It could be the USB port, USB cable, and USB hub causing the drive not to show up.
Follow this complete guide to fix the External hard drive not showing up on Mac.