This article says you can retrieve your key when in fact you can't if you purchased longer than 18 months ago

Apple Support told me that I had to repurchase my software keys for QuickTime Pro because the order history no longer gos back farther than 18 months.

Thanks, Apple. After leaving the software keys in my order history for literally YEARS, for removing them without warning and telling me I'm out of luck - in spite of what the Support article says.

If you'd actually TOLD ME you'd be taking down the information, I would've taken steps to record the keys elsewhere, BUT YOU DIDN'T, and if I need QT Pro I'm out $40 for s second time.

I've been an Apple customer for 20+ years, and this is a big disappointment.