A members offer is a "big" coupon. For example $100 off a $100 or more amazon purchase or a $50 off $50 at target. Some aren't as big as that and more modest like 25% off a purchase or something like that. This is limited to 1 a month. You can still use the normal % back for the stores on a daily basis. That part is not limited to 1 a month. The members only offers have to be claimed by you and they will go to your inbox once you have claimed it.

Hi, Bobbie. "Members Only" offers are frequently our "best of the best" cash back offers and are usually released in limited quantities. You may only claim a total of one limited-quantity "Members Only" offer across all stores and brands in a 30-day period. This wait time is intended to let other CouponCabin members take advantage of these great discounts as well. You are able to see the "Members Only" offers that you have claimed, and the date on which they were claimed, by visiting the "Saved Offers" page within your account.