Tvheadend

Hi guys, I am using TVH 4.2.8 with dvb-s2 and dvb-t2 tuners. Everything was working as expected but recently the epg for the dvb-s2 is missing for most channels and only populates when I play the channel. These are UK channels such as BBC One/Two, ITV etc. I have not touched anything since I set it up so wondering what it could be? Not sure how to troubleshoot it either. The epg for the DVB-T2 channels works fine and I can see days of listing for those channels