I have had this app for months. Logged in with Google. Have gotten 2 $25 gift cards and had almost 7,000 units on my account. A couple of days ago it just stopped opening. Today, when I tried to open it was making me sign in again. Thought there must be an update. Nope. Deleted it and redownload it. Guess what? Starting from scratch! Nothing is saved. Not my units, not my games, nothing. I am deleting this app. Takes too long to earn and the options suck.