Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Does this happen on all movies/shows in Boomerang or just specific titles? Are all other streaming channels playing content normally? Have you tried the steps posted above to see if that resolves the issue?
Keep us posted and we'll continue assisting from there if needed.