@Kyra420: it's amazing that you were able to get a lot of glu credits without any cheats - would you mind telling me/us on how to go about it?! I'm also on Android in my S4.
Cool... thanks to all for the replies, esp Sheppeck. I've submitted a problem ticket. Just checking... if I uninstall and then reinstall again, will I lose only my progress or even the guns, bucks and glu credits (gold)?