Hello, I had a license for Parallels Desktop 8 and was led (from the program) to a link to upgrade to 11. I paid for the upgrade for version 11, but when I tried to active the license I became aware that the license for my 8 version is not valid for the upgrade license. I suppose to I have to buy Parallels 9 now, but it is not apparent on the Parallels website where to buy it. Could you provide a link ? Is this going to be more expensive than if I had just bought 11 outright ? This really should have been explained more clearly in the upgrade process.