I bought Parallels 12 last week for my touchbar macbook pro but it was too slow so I downgraded to Parallels 11 and it has been fantastic. I want to buy an activation key for Parallels 11 but Parallels only sells 12 now. How can I get an activation key for Parallels 11. I thought my Parallels 12 activation key would work but it specifically asks for an 11 activation key. Please help before my free trial runs out in 10 days.