I would love, except for...

I bought a pond ambience: "Tropical Birds" (spent 4 credits on it, which got by selling some koi fishes), and it stayed the same. As a matter of fact, it stays the same even if I change it between the free ones "Forest" and "Quiet". Also, the previews do not work. Please, fix. I love this game, but this made me very upset. I got it for my 3-years-old niece.

Update (8/17/16):
Liking it less. No fix yet.

EmSMT:3 about Pocket Pond 2, v1.4.2