Damaged and have to pay again?

Been using this program for a few years (started with the original Smart Converter Pro). When they brought out Smart Converter Pro 2 I was okay with paying for it again because it’s really a sweet program. Today I tried starting Pro 2 and I get at, "“Smart Converter Pro 2” is demaged and can’t be opened. Delete “Smart Converter Pro 2” and download it again form the App Store.” Okay…so I go to the app store and it tells me I have to pay $15 again. Sorry…already paid for this twice, not going for a third time.

Dwarrenr about Smart Converter Pro 2