Notice that the Vertical Slider has more space to slide up 😉. Seeing this indicates to me you’ve got further/other options. So:
1) Check: View All Options
2) Click Down Arrow next to Output Format.
Report back here.
Sorry, I'm a bit thick (I'm only 14.) It worked, although not everything I expected to come up did. For example, a format I premade as a template didn't show up. I managed to export it as .mx4 or something, even though it ended up being a .mp4 file opening in VLC (who knew you could have three file extensions.) Thanks!