Direct Pub Channel Won't Load- 'Appears to be a problem'

Hi Gang, what can I do to check a direct pub channel that shows all green check marks in the summary, but when clicked in my local Roku, starts, then shows and error 'There appears to be a problem. Please try again later'.  I am using videofeedbuilder.com to do the RSS feed based on vimeo content. Not sure yet if that is the issue. Please help and thanks!