Keeps corrupting IMPORTANT files – PDF Viewer - Annotation Expert Review

I am military and have to fill out forms frequently for me and others, this app is great for doing that when I don’t have a computer where I am. Recently when I am typing in responses in entry fields the app freezes and corrupts the file and is no longer openable. I have had various important files corrupted and have to re-do them which often takes a long time.
Review by Moivae on PDF Viewer - Annotation Expert.