Follow me mode is the only mode of operating the breeze that never worked flawlessly and probably will never do so. So your experience of the app crashing might well be an aspect of the less than perfect functioning follow me mode. Yuneec breeze pilots experienced these hiccups in numerous combinations of smartphoneOSes and smartphone makes. In practically all forums you will find reports of failure as well as of success. This summer Yuneec (EU) itself admitted that they have no reliable and reproduceable procedure for this mode of operation. Since then nothing has changed. Personally I just accept that follow me does not work because I like the drone.