Memory Game

Using the memory game in a popup

I am new to H5P and Wordpress in general and am trying to build an educational course suing Learndash, Elementor Pro, and some of the H5P activities and games.  I have created a pop up with a memory game inside of it but it does not show up.  The pop up box shows up after you click on the button, but there is a long thin white bar that shows up where the memory game is supposed to be.  Is this a problem with Wordpress or Elementor, or do I have the settings wrong with the memory game itself?