<p>a.&nbsp;&nbsp;&nbsp;You can only use one coupon per order.</p> <p>b.&nbsp;&nbsp;&nbsp;Your coupon has passed its expiry date and has been cancelled.</p> <p>c.&nbsp;&nbsp;&nbsp;The coupon is not eligible for the product you&nbsp;have selected.</p> <p>d.&nbsp;&nbsp;&nbsp;The product is already on discount and you&nbsp;cannot use the coupon together with this discount.</p> <p>If you have any issues with the promotion code, then please&nbsp;send the code via email to service@firmoo.com&nbsp;and we will assist you in rectifying the issue.</p>