App constantly crashes! – VivaVideo - Video Editor&Maker Review

All of a sudden this app has become almost useless! It won't even open! It crashes a half a second after trying to open it. And it takes 2 or 3 times of trying to open it, before it will stop crashing! It also crashes when I try to apply a theme. Can you please fix this! Im using an i phone 4s with the latest ios system.
Review by Melissatized on VivaVideo - Video Editor&Maker.