[badgar]

When arbitrary limits like "18+ years old to get paid to report bugs" come up, I look first to the legal system for blame. Consider that these bug bounties are going to be filed with the IRS and all that: these bug bounties are regulated, and with labor involved, it'll be more highly regulated for minors. I'm guessing there's some extra legal hassle to pay minors for their bug reports that paypal doesn't currently consider worth dealing with.