In case you enter a discount code during checkout that doesn't exist or isn't currently active, then you can see the message: “Unable to find a valid discount matching the code entered”.

Discount codes don't stack. If you have 54% off discount, they can't also use a "free shipping" coupon since Only one discount at a time can apply to a single order at the BackJoy site.

Usually, Coupon Stacking is not allowed at BackJoy. However, the store will surely give out notice if available.

Yes. Coupons for each Discount Event of BackJoy will be collected here while being updated day by day. Sometimes, there will be deals not updated promptly but it's rare, we expect sympathy from you. 

Shoppers can get coupons for their first purchase at the store. However, it is not all the time, sometimes, they cannot apply a discount on items selling out or items not contained in the promotion program. It depends on the time you shop at BackJoy.

At the time of updating, BackJoy has not applied Student Discount all year round yet. Check the official store and reach out to the customer support team to be clear.