There are several reasons this may be. If you
a) have not met all of the requirements
b) have no room for the reward
c) Have a bad internet connection, it may take a bit to see the result. Try refreshing
d) Technical glitch, in which case you should post here:http://forum.konoro.org/bugs-and-development-f9.html
Hope this helped you, though I see I am 6 months late.
~*Violet Wolf*~