Trouble with data entry fields in Storyline 2

I created a crossword puzzle (attached) in SL2.  I used data entry fields for each item in the crossword and I set up all the triggers and layers.  However, when I delete some of the entered text letters and Preview or Publish, the text fields are no longer writable.  So the student won't be able to do the crossword.  Did I do something wrong?  If so, I can't see it.  The only thing I could think of is that I made the text entry window too small.  

Any feedback would be appreciated.  

2 Replies