The coupon balance data is connected with our front-desk database and using your email and phone number to connect both system.

If you haven’t taken any lesson in SDZ yet, you may see no result in this page. 

If your online account email or phone number registered on this website is different from our front-desk record, your coupon balance cannot be checked here.  If this happen to you, you can either update your online account contact information here, or contact our front-desk to update your email and phone number.

The data shown here is just for reference and might not be the latest record.  

Please feel free to whatsApp us if you need any help.