Hello, Did you purchase a key? If yes, it should be sent to your email then. Please check your Spam folder. If you do not see it there, please send me your email you bought the key from, via the private message on this forum.
Hello, There are no monitor-specific profiles currently. Each profile has settings for the each monitor you've ever connected to your PC. I think it "does not affect" your monitor #3 just because it has the same settings your monitor has.