Problemwith new update

I bought Sparkle pro 4.0.1 (16479) License 2.x
But if I try to update with 4.0.7 I am asked to pay again. I did not find where to click to relaunch my old license. How to proceed ? Have I to pay ?

@Celmar, you might have to ask Duncan on this one but the most obvious one is if you have bought Sparkle on the macOS app store then you can’t use the Sparkle app on Duncan’s website to update it. And of course vise-versa.