Hi pianoman23,
I've had some troubles with my 5.1 license recently, you can read here about this subject:
viewtopic.php?f=2&t=856I've checked "my.mackie.com" right now, and it's working fine to me. Perhaps you should check if you can access, as I do. Once in, you should find your unlock codes in "Your orders", by following the link of the v5.1 you purchased.
Kind regards.