If you need to move Barcode Producer from one computer to a new computer (regardless of platform) you can simply uninstall the software from the old computer, then download and install a copy on the new computer — your original license code will still be valid.
If you lost your activation code, recover it here.
You can download a copy of the current release of Barcode Producer for Mac or Windows here: https://www.barcodeproducer.com