Once you sign up and have gone through the tutorial on how to use the app you'll get 200 units free to save up and use towards your next reward you wanna use in the app. This apps rewards mainly have gift cards and Paypal as reward redemption's.
A game for this app I recommend playing is Lords Mobile since that has the highest unit payout on the app as of July 9th 2024 from what I remember.
Then if you save up enough units in one big reward redemption, then you can direct it to the reward of your choice.
You have to be someone who doesn't have a PayPal account yet. This link is good until December 31, 2024
All you have to do is sign up on Paypal then make sure you have a card or bank account linked to your new account.
Next within 30 days after signing up you need to at least spend or send $5 then you'll be able to get 1000 points ($10) of cash back that you can put in your PayPal balance or to use towards shopping within the app or website.