CoursePress Pro deletes Units/Answers

I started this on a previous thread and received no response. CoursePress Pro keeps deleting answers and units RIGHT after I go to save. Previously I had worked on several units, and then they disappeared a few days later. We talked to our host and increased the memory and the server, we're on the current version. After looking up other threads and reviews, it looks like this is not a new problem -- several versions have for years. Please help!!!