I have a CCleaner Professional License Key that expires 17 Jun 2019 & I'm trying to re-download & I can only download 14 Day Trial.
Edit: Gave wrong info.
Correction:
Some users of the pro version have had it expiring since they thought it was a lifetime license. See here:
https://forum.piriform.com/topic/52694-ccleaner-pro-lifetime-licence-why-has-it-expired/