iPad not playing prime download

Greetings Usingdano, 

Since we already know the issue is isolated to content from a specific source and downloaded content, we’re next going to ask you to test streaming the content using the HDMI connection to see if the issue persists. Also, noting whether playing downloaded content from Amazon Prime has ever worked for you before is helpful.

Most likely, reaching out to Amazon about how to play their content is going to be next step. 

Thanks.