Are you able to share a screenshot of what your uploaded files configuration look like in the “Edit Game” tab?
I noticed on your other projects you uploaded individual png files. I’m not sure if that would be an issue, but did you maybe use an unusual file format that would cause this? Or maybe uploading too many files?
In general, I find it a better experience to upload a zip file containing all the files, especially if an average user is expected to get most/all of them.