I formatted my hard drive, reinstalled my OS, the only one that works with my computer is High Sierra Version 10.13.6. The new Parallels will not work with this OS so I installed the latest version I have which is Parallels 11. When I activate it I get a message saying (No internet connection) Now when I click on Parallels it goes directly to activation and I cannot get out of it. All my Windows are installed on an external hard drive which is not yet hooked up.