Either the featured image isnt working when I select "override" or the date order is goofy

Either the featured image doesn't work in the events menu and in the event page when i select the "override" the theme box in the setting or if I unselect it, the events are arranged according to the date I posted them and in the event page the date posted number is huge and confusing. help!

Also, there is a bunch of extra stuff on the bottom of the event menu, when the override is selected.