Never had any problems with this plugin neither by OpenBlackHOLE nor by BH: claiming it does not work it's a little bit... exaggerated
Does this happen with every channels? Have you checked that? I hope is not an IPTV channel...
As far as I remember it doesn't work on Zero 4K
nor with a single image.
It's an old problem. I don't think it's ever solved.
make it work again