Greenify makes me press force closed, didn't used to

[AC Question]

HTC One M9. Not rooted. When I first installed greenify it would hibernate my stuff without needing me to press force close every time. Now that I have reinstalled it it asks me to press force close for every app every time, which is very annoying. How do I get it to go back to the way it was? It seems like all the permissions for it are enabled...