Forum:Don't have Helloween visitors on my island

Hi, I'm demoria and I have a problem with the helloween event. I don't see any zombies or other creatures on my island. Where is the problem? I don't thinks it's in the phone - samsung galaxy s2, because my boyfriend has the same phone and the same game, but everything is fine with his island. I don't know what to do, I tried with changing high detail and low detail, but nothing works. Please help!!! :S