1) When you're at the checkout and about to pay, in order for you to receive cashback - you have to show the cashier your unique code.
Your code is simply your display name +JL. You can find your display name by going to the "Account settings" section.
Example: My display name is "jack123" - it means the code is going to look like this - jack123JL. Applicable to all the stores.
P.S. the display name is not case sensitive, but always put the last "JL" letters as upper case:)
2) Fill out the payout form to receive payouts in the same section - "Account Settings".
Note - you can only receive crypto cashback if you paid in the store with crypto!
Once you completed the steps above, you're set!