If you use PayPal, watch out. I've seen someone get charged by Brainly even though they don't use it. I don't know how Brainly hacks into people's PayPal account, but it's insane. It's 13+ OBVIOUSLY because Brainly is letting teens and adults date. The moderators just HATE people, they delete correct answers without no reason. I've used Brainly a few times, I have gone into it for answers, but at least HALF the time, the answers are wrong or they just say "I don't know sorry." Brainly, you need to QUIT hacking into people's PayPal account.