Joanns told me that as long as the coupons are not from the same source, example one from the web and one from a mailer you can use both. Also if you get a really nice sales clerk they will ring them up separately. It is not the store,the computer sometimes will not accept two of the same coupons. I had my husband sign up and that way I get extra mailer coupons. They don't verify the name and sometimes he goes with me and we both buy. You have to use the mailers or they take you off the mailing list. If you look at your coupon your name is printed on the coupon. If you haven't used them in a couple of months you have to sign up again. It has happpened to me twice.