My 25% Off Store Coupon I received for purchasing/renewing my membership, gives me an error message that my code is either expired or has already been used!

When trying to use an Active 25% Off Store coupon from your My Dashboard / Coupon tab, and you get an error message that the coupon is either expired or already used, please ensure the item you're trying to purchase is not in the coupon's excluded products list:  
"Excludes sale merchandise, product bundles, sewing machines, Block Of The Month kits, Lizzy Albright Kits, Artist Quilts, and memberships to The Quilt Show. One coupon per customer."
This list is also found on the same page as your coupon code.

Secondly, if you have copy/pasted the code into the coupon field during checkout, please type the code in instead, EXACTLY as it reads in your Coupon tab.  Sometimes, the copy/paste feature may include a space at the end which isn't actually in the system's code.