I have earned some rewards and I also had a discount code. I should be able to use both, in my opinion. I am a loyal customer and use this service frequently. Also, when I went to try and use a different code, it completely erased my order and I had to start over, which delayed my order submission. I really like this service but I feel like I should be able to use the Discounts I have earned, along with the normal discounts. Thank you!