Exported Video Cuts Off Half of Image and Sound

Hello! I really could use some help. I am trying to export an animated video I made with audio and turn it into a mp4 file so I can watch it. Everything seems to work just fine, but when Adobe Media Encoder is finished encoding my file and I play the video half of the video is cut off from the bottom (so I can only view the top half of what I've animated) and there is no audio. I have checked to make sure that the video will export with the same dimesions of my canvas, but it just isn't working. I have followed everything this guide (https://helpx.adobe.com/animate/how-to/export-video-mp4.html) has said, but I am unable to get it to work. I have tried exporting the sample file on that page, which works, but mine won't. If you're able to help you'll have to explain things in a very simple way because I haven't used Animate or Media Encoder before. Also, this website won't let me attach my file, otherwise I would so someone could help me out. Thank you for the help!