After much patience from
@pabloescaban we found the problem. My ISP blocks the epg download although the iptv still works.
My hardwired broadband speed is really poor at around 1.5mbps so I also have a 4g router. We found that the epg download works with the hardwired but not the 4g or a hotspot from my phone.
Hardwired BB - Shell Energy - epg downloaded
4g Router - 3Mobile - epg doesn't download
Phone hotspot - EE - epg doesn't download
No practical to change connection just to download epg so I'm now looking to add my nordvpn details to my box.
Thanks again to
@pabloescaban and the rest for the help. Very much appreciated. 👍