I can't delete Amazon Prime Video from ATV 4K. Tried highlighting, jiggling & pressing play/pause button on Siri Remote - and also tried from Settings - General - Manage Storage & track can delete. Neither method works and Amazon Prime Video remains. I do have a dev account - haven't removed the profile but did turn off beta updates to see if it made any difference and it did not. Really weird - I was trying due to audio stuttering on Amazon Prime Video. I finally unplugged ATV and restarted AVR and it went away.