Your app isnt working

Hi umm your app isnt working and its making me really mad and want to throw my phone! Like every time I log on I try to edit a picture and it shuts the app off to my home screen the I click the app again and it logs me out what can I do to fix this? Cause Ive already deleted it 4 times and restarted my phone and its still not working!

EatTheHoleCake about Muzy: Photo Editors, Collages, and More, v3.5.1