I always go directly to restaurant.com to purchase my certificates. We have been using them for over 5 years, mainly when vacationing in different areas, but I have purchased several for my home area. Didn't get any for this latest trip I just took, but last year I got one for House of Blues. Had to spend a minimum of $35, but since they included alcoholic beverages that helped. Still, on a solo trip and dining by myself so bought two young ladies sitting next to me at the bar an appetizer.
Reading that you purchased 2 for one restaurant, hope you realize you can only use one certificate. Terms of certificates appear when you click on the denomination you are interested. Company is very flexible. One I purchased last year expired in one year, but I was told to log in and reprint it and it would have NO expiration date. So, if you have any unused certificates, check that out. Also, if you want to change certificate from one restaurant to another, I understand that can be done although I have never done so myself.