Articulate 360 trial

I am using an Articulate 360 trial to get a feel for the software before my department gets a subscription for my use.  I will be mainly be creating educational PowerPoints with quizzes.  I am a nurse who is self educating on the use of  education software, so please take that into consideration.  I have put together my first very basic PowerPoint with and graded quiz.  When I run the preview,  all of my lower case f's display as blocks.  Is this because i am using the trial or is it a compatibility issue with my computer?  Thank you for any help.