I have always had a main calendar page that shows as a calendar and another page where upcoming events are viewed as a list. Now for some reason, both are being viewed the same way and I cannot get them to separate. Any ideas as to why this happened and how to fix it?

You have a list on your front page and the calendar view is on the calendar page. You may have clicked the view options at the bottom of the module. Log out and then look at it. You may need to clear the history of your computer.