Anyone know how the AliExpress Business 3% cash back works? From what I can see, I think all you need to do is register your mobile phone number in the bonus section of the account settings and then get 3% cash back credit for orders over $100 for participating items. Not sure if using coupons affects the cash back. Not sure of the expiry of the cash back credit.
example: https://files.ozbargain.com.au/upload/37385/111227/bonus.png
Refer to this deal post, it's targeted.