Buyer wanted me to use this app in order to purchase some items I posted on the Facebook market. They advised that my account had a limit and I would need to receive additional funds. Buyer sends additional funds. Then I am expected to send a confirmation email with screenshot of me sending buyer refund. All of this is expected without any money being deposited into my account. Next major flag is that emails contained grammatical errors. I firmly believe this app was set up to scam people.