I received a vouch copy and everything worked exactly as the seller stated. I have also used the sellers Walgreens service and it too went fine. This seller can be trusted.
With this store, just install the app and log in. The rewards card is immediately viewable. Even after scanning the card, they present you with a total. You can inform the salesperson you would like to use your rewards or they won't do it automatically. They'll ask you how much you want to use.
Thanks again.