Users with first generation iPads aren't going to be able to install the new release of H9 Control. We marked the latest release as being compatible with iOS 6 and above. The reason for this is that Apple forced us to start building H9 Control against their latest SDK, iOS 8, and to build the app for 64 bit devices, and we have never been able to get H9 Control to work on iOS 5 when built this way.
We are looking into whether we might be able to get H9 Control to work on iOS 5, but unfortunately, we can't promise at this point that we'll be able to continue to support iOS 5 and first generation iPads with new releases.
