The project failed exporting. Please try again later." Has anyone been able to fix this?

Hey ​@Clever_Moon7c83 
Could you have a look in your Creative Cloud App and see if the image/video is hiding there?

How to reliably download your files
In your Adobe Creative Cloud you can find your files there and download them. Here s a short video showing the steps

https://youtube.com/shorts/fCgb1ZR48tU?feature=share

Cheers

Nate