Won’t allow you to link – SavingStar - Grocery Savings Review

I can’t redeem anything because it won’t allow me to link my rewards cards. Therefor, you can’t move forward in submitting a rebate. It the app did what it said then it would be great. I tired 3 days in a row and nothing. Disappointed in this app. ?
Review by xxxxxxxzzzzxoooooppppplllll on SavingStar - Grocery Savings.