Coupon code is a discount coupon that can be applied for data communication fee. If you register your coupon code in your account, the amount of coupon will be automatically applied.
How to register your coupon code
- Click the username at the top of the screen. Then select "Manage coupons" from the pull-down menu.
- Click "Register a coupon" button.
- Enter your coupon code in the "Register a coupon" form and click "Register" button.
Note: Currently, up to two coupon codes can be registered in one account.