ramzixp is an idiot. he write that he do not have even 100 downloads per app: http://forums.makingmoneywithandroid.com/advertising-networks/32930-anyone-tried-ios.html . He is scammer and only want to earn referrals. fu ck idiot!
Looks like Google detects app2top reviews, and removes them from time to time. You need to check ‘My apps’, then press ‘Analytics’ on your app, and scroll down to Events.
That sucks.