There are three methods to check your CashBack balance.
At the in-store kiosk
On the Infinity Rewards website
On the Infinity Rewards card app
In-store kiosk
Scan your card at the kiosk and view your details
Infinity Rewards website
Click on Login
Click on Cardholder Login
Enter card number
Enter the password. This is always defaulted to cardholders birth date YYYYMMDD
Infinity Rewards Card app
Enter your loyalty card number
Confirm your cell number linked to the card
Your cashback balance will display