She will tell people she is of age to attract men in on POF. Then after a few messages her " step dad" will get on the phone saying that she is 17, and in order for them not to go to the police you have to pay for her phone and the deactivation of the phone. By getting $800 worth in gift cards, scratching off the code and sending them a picture of the code on the back of the gift card.
It doesn't matter, this is simply an extortion plot.
Under Age Girl Scam
Yes it is an extortion scam being run on or by that site. There are numerous number threads here with the same story. Make a police report to your local PD.
It boggles my mind how all the information and answers to those questions are right there and they can't take the time or the effort to read and learn.