Cubase iC Pro Android to Apple

I have, on one of my eLicenser USBs, Cubase iC Pro Remote Extension / Steinberg_SKI_Remote_Installer_win.exe For Android only, which no longer works and cost £12.29 on 26/4/2014, so I now wish to change to and use the Apple version, which costs $16.99: is there any refund process in place or conversion-swap in place?