I have selected the "Cache" option under some of my survey 1-2-3 questions, saved it, and republished the survey. I deleted the old questions, tried to create new ones to replace it with the cache option checked and the problem continued. At least the browser option works fine and it cache's the responses. When I use the app it does not cache the answers. And now I have an additional column in my data sheet for the new questions and don't know how to delete them. For example, the old questions were "name" and "email". I deleted them and replaced them with "Full Name" and "Your Email" and now I have all four.