If you've been instructed or have a special arrangement, it's possible to use a coupon code on the Touchpix website. Most likely, to redeem a code for a subscription activation.
Follow these steps to ensure the discount is applied correctly:
Log in your Touchpix account
Go to the shop and add to the cart the eligible subscriptions for a discount
Go to the cart and enter the sale code in the coupon code field. Each subscription has a code for its specific discount
Make sure the discount is applied before completing the purchase.
If it is a code for a subscription activation, will be automatically activated and you will be notified.