The voucher field is located directly below your shopping cart. When you click on the “Apply” button to the right, your discount will be applied to your order (except for fixed-price teaching materials). Voucher codes can only be applied during the checkout process and, not after.
My valid voucher code doesn't work
If you are having trouble with your voucher code, you can try the following: clearing your entire cache or clearing all cookies in your browser history. You can also temporarily disable any plug-ins and pop-up blockers on your device (i.e. for the duration of your order process), as these may prevent you from completing your order. You can also open a different browser and try to place your order there. Please note that expired voucher codes cannot be reactivated or reissued.