IPTV Zgemma HS9 - Channels switching stops channels working

Hi All,

Bit of a random issue but wondering if any one has any ideas.

I have a zgemma hs9. When i am switching channels sometimes all IPTV just stops. No pattern unfortunately. Leaving it for a while it and come back it seems to work.

One thing i have noticed at the same time my iPhone app that plays iptv m3u playlists doesn't load . it feels like something is getting blocked all of a sudden. However i can still download bouqets from my provider on the box.

I am a bit of losss. Could it be my ISP blocking it but surely it would stay blocked until using a VPN or proxy.

Is it worth trying to fully flatten the box with a fresh image and put wooshbuild back on.