Well, apparently there was nothing wrong, just a change in how the screen is viewed.  The input screen is locked, and to  open it up so you can see the detail and change or add info, there is a button on the tool bar that needs to be clicked.   So, when you are at the screen input detail, look up at the tool bar and find the button that looks like this:  a straight, horizontal line, with an arrow pointing upward that's on top of the line, and one pointing downward below the line.  Click it, and it will open up the detail input screen.  I was told that this feature is here to avoid unintended changes.