Upgrade from 4.1 version of Sparkle Pro

Hello, I downloaded Sparkle 5 from the Mac App Store. I have a previous license that I ‘think’ is for Sparkle Pro. I have Sparkle version 4.1 saved on an external drive, but have a newer iMac now with only the new Sparkle 5 App on it. Am I entitled to a discount when I update to Sparkle 5 Pro?
When I click ‘restore’ in hopes of updating with my license number, I get no response. I tried to check my status by signing in to the community but this information is not in my profile. What is the best way for me to proceed?

Just send @duncan an email on feedback@sparkleapp.com explaining your license situation.