Do you upload a file in your download product or your online course and the yellow bar goes full and then nothing else happens?
Then it may be that the plug-in we use, which converts the files into a uniform format after the upload, cannot read your file.
What can you do?
PDF file: Compress your PDF file. There are free online tools that you can use for this.
mp3 file: convert the file to another audio format e.g. wav and then convert this wav file back to mp3.