I have an old usb stick with a license for cubase4 that I haven’t used for many years. Now it doesn’t seem to work with the license?
I just bought the upgrade today. I used to work on a pc but now Im on a Mac. Does it have anything to do with that?
You should purchase the upgrade from Cubase Studio, not Cubase 4. The verification process will not go through if you don’t have a valid license to upgrade.