Cross word Activity.

Hi, it could be a text entry field problem, but tough to know for sure. If you have a file you are working on you can upload it here, it's always easier to trouble shoot/offer a solution with the file in-hand

This may help, it is an article on data entry fields, and how to set them up.
https://community.articulate.com/articles/articulate-storyline-360-user-guide-how-to-work-with-data-entry-fields

This link explains how to set up a simple crossword and there is a file you can download to explore and see how it works.
https://community.articulate.com/articles/storyline-crossword-puzzle