Won't tune Sly Sports

[fridayshoes]

On Plex client I have no issues tuning into other subs channels, but Sly Sports won't tune, even though the channels are definitely active (as I can view them in OpenWebif), any ideas?

I should add that it used to work fine on any of the Sly Sports SD channels, but for some reason it has stopped working. I first noticed the problem on the android plex app, it was still fine on the pc web app for a bit but even that has stopped tuning too now.

If anyone can direct me how to compare why the Sly Sports channels won't tune compared to rest I am happy to post the results here to find out if it can be resolved - I know there's a dbug option in the plugin, but not sure how to use it or where the output file from it will appear...