For offers: On the FWD MAX page, click the "offers" menu. For the discounts,  you’ll see a "free" word inside a black box. Select the offer you like and click "redeem". Read the description and the T&Cs and if you agree, click ok.
For e-vouchers: Click "open e-voucher". Read the conditions, click "use e-voucher". Show the page to the cashier, enter the store ID or scan the QR code, then click "claim". Once the transaction is complete, you’ll get a discount. If you don’t want to use the e-voucher directly, your voucher will be stored in the "e-voucher" menu. Just click the voucher when you want to use it. Unused vouchers have a "new" sign., Those expired will be marked "exp" and those you’ve already used will be marked "used". Vouchers marked "exp" and "used" can’ t be used anymore.