This story was originally published on Grocery Dive. To receive daily news and insights, subscribe to our free daily Grocery Dive newsletter. From cutting-edge apps to e-commerce, Kroger has invested a lot of time and money in boosting the digital shopping experience. But these days, it’s finding that a lot of shoppers just want to go back to paper. Paper coupons, that is. In recent weeks, the country’s largest supermarket chain has begun reintroducing paper coupons to all of its stores. These promotional ...