Yes, that’s true there is a quiz at the end. If you get the answer wrong though it tells you to try again. You can’t really fail unless you give up. That’s a shame you never received your funds. I made about $80 laying in bed the other morning watching their videos and have also received referral payments. You may want to give it another shot and see what is still available to earn.
Yeah sure, I saw some new coins they are offering today to give a reward worth $ 167 in total. Last September was my last transaction with Coinbase so I just visited again. OP should consider this, apart from free money he will also have more knowledge. And he can also earn from his acquaintances who want to learn about crypto.