1) Start the XBMC Constellation App
2) Click on PRO
3) Select restore and a proper version (if you bought it on iPad please restore the iPad Version)
4)Select Buy (you will not get charged twice if you bought the app it’s yours for lifetime, also if you bought the app for 0,99$ and the price changed it’s still a free for you)
5) Now you will have to enter you apple id and password so we can verify your payment
6) You will get a dialog confirming that this is a free download
7) Enjoy your ad free and fully featured app.