Novakitz is made by one person. Write to me and I will answer — usually within two working days.
If it is about a purchase, please include the Apple Account email you bought with. It is the only way to find the receipt.
Reinstalled the app, or signed in on another iPhone? This asks the App Store for purchases already made with your Apple Account and turns Pro back on. It costs nothing and charges nothing.
Works inside the Novakitz app. In a web browser there is no App Store to ask, so open the app and try it there.