Mistargeted. Some of those countries listed have large "like" farming operations. If you really want a lot of Philippine users then put in features that "like" farmers would want. Ease of switching identity, stuff to help populate fake accounts to make them look real or more real...

Or if you don't want to get blocked by FB in some eventual roundup of fake accounts (although admittedly FB has no financial incentive to do so, it could happen...) try to fix the demographics of your app so you don't get mixed up with those folks when the hammer falls on them.