DVB Guide data

Hi. I haven’t used the channels iOS app for a while but I notice in the latest update that DVB guide data is only giving a few hours of data and not the 7 day guide it used too in the past?

Nothing has changed with the DVB code recently. Guide data is downloaded as you watch TV and can take a while sometimes to get the full 7-days of data.

Does the app just need to be opened? Or does it need to be active?

It needs to be tuned into a channel to download guide data for that channel and all the other channels that share the same mux.