Here are the issues I have noticed so far.
On the "Home" screen, nothing works when touched except the special bonus's blue claim button. "New friend requests", "You have new bonuses!" "You can recruit new crew now!", "Quest", "Arena", "Bonus Panzer Earth Dragon Map!", "Guild System Released!", and "Invite Friends For 6-Star Card!" all do absolutely nothing when touched.
On the "Recruit" screen, none of the options work when touched. I am unable to select "Today's Free Chance Free Recruit" or either of the two options above it. The players shown below the Free Recruit area who I have the option to "Add Friend" with also does not work when I touch "Add Friend".
On the "Menu" screen, absolutely none of the options function at all. I am unable to do anything there whatsoever. Everything from "Friendship" to "More Games" simply does not work.
My phone is a Droid Razr Maxx, running Android version 4.1.2. My carrier is Verizon, although I doubt the carrier matters in this case.