I love this app

Hello

i like this app but when i update to the last update it’s not working i saw this massage :
“Movist” is damaged and can’t be opened. Delete “Movist” and download it again from the App Store

i delete it and download it again but it’s still not working

plzzzz help me :

my mac version is : 10.9.5

thank u

Rim0 about Movist