It's not broken!! I see a lot of comments about it not backing up properly after the initial backup or more recently it just stopped. Well I can tell you  it isn't the app  it is Andriod who has caused it to stop working. Go to battery and click advanced. The battery optimization has it idled if you haven't used it in 3 days. So you have to change it to never  so it won't idle the app and it will continue to backup when it's supposed to!
April 29 2016