Adobe Live will not download mp4

I have been trying for 2 days to download a video as an mp4 from Adobe Express. It is a short video, each section only really has a background color, some text, a video, and a couple shapes (with background audio throughout). I have tried replacing each video, removing transitions, removing the audio, logging out, clearing cache and history, and restarting my computer. All lead to the same, non-specific error.