It’s an issue loads are getting just now mate, mines is the same. I’m trying to get a fix myself but I see some on here have it sorted. Some also have no audio on ch4 hd and sky sports main event hd aswell as Fox hd I think.
You need to update your boxes, ATV 6.1 has been fixed and most of the builds in the download section based on atv have been updated. As vix doesn't support zgemma I think people are waiting for a patch, vix itself I believe has been updated