I’ve just purchased this (Pipe Organ) too and am having the same issue. It isn’t showing in Product Manager.
I received an email but there was no serial number. I was (and still am) logged in at the time of purchase.
I purchased Mellotoon a week or so ago and that worked fine.
Get all the latest on new releases, updates and offers directly to your inbox.
Note: By clicking the 'I WANT IN' button, you will not be creating a Toontrack user account. You will only sign up to get our newsletters, offers and promotions to your inbox. You can unsubscribe at any time from a link at the bottom of each email. If you want to learn more about our privacy policy, please find detailed information here.