It won't open anymore – MinimaList: To Do List &Widget Review

I really loved this app and used it as a to do list/medical journal but ever since the update it closes as soon as it opens. :( I had pages of information on there because it was so convenient. I don't want to lose all my info by reinstalling the app. Is there some way to fix it?
Review by Chronic Migrains on MinimaList: To Do List &Widget.