At this time only 1 discount or coupon may be applied to an order at a time.
This means if you have a coupon code for free shipping AND a discount code for an amount off your order you can only use one or the other, NOT both.
If you have multiple discount codes you will need to make a separate purchase for each discount code.
Discount codes generally do not cover shipping, please do not assume the code will cover shipping unless it specifies that it will.
If you have any questions, issues, or if you are unsure what your discount code value is, feel free to send Customer Support an email inquiry prior to completing your purchase.