My game is only running in window mode and I can not figure out how to make it full screen. The main issue is the buttons towards the button of the screen are cut off and not clickable. Has anyone else had this issue? There does not seem to be an option to fix this/

Possibly adjust the "size of text, apps, and other items" in Scale and Layout on the Display screen on your computer. I believe the game displays best for most everyone at 100% for that adjustment.