I'm a newbie DP users. We've successfully added a number of videos and live streams, which is fantastic. However, after updating our branding and channel poster, the older versions of all are still being displayed. I tried deleting the channel, refreshing the feed, and re-installing the channel but the old (and rather unpleasant!) branding/channel poster is still being displayed.
is there some secret handshake I need to know to help get this content to refresh?