Problem to "save" Glu Credits

Niyuki

Hello! first sorry for my English, but a few days
here I've been having problems with my Defenders and Dragons! In short, always
my progress
from being saved, but the Glu Credits that I earn
in the waves (in 10 for example), if I restart the
game, end up losing them! I've tried save normal
and by Clound, but whenever I restart the game,
I'm with my same 9 coins! My phone is a Sony XPeria L, with Android 4.2. Thank
you!