App not doing what it says it does

I downloaded this app for clients (I work with children) and a niece. They follow all the rules (feed and play with the fish, clean the tank and tap on the daily gift) and the app will not provide them the opportunity to spin for free coins (which it says it will if you tap on the free gift for five days in a row.) Its not nice to disappoint little ones just to make a buck... At least thats how it feels in this case. Something tells me the developers arent going to fix this or anyone problem reported in these reviews. Too bad. It is a sweet app other wise.

A Girl with a Curl- about Pocket Pond 2, v1.4.2