What EPG format should I use?

Archived editorial answer

XMLTV is common; the channel IDs in the guide must match the playlist mapping.

A practical check

Verify the exact input type in your player. XMLTV files use a channel identifier that programme records refer back to. Check that both records are present for the programme you want to test.

Ask a follow-up

Include the exact device, app version, time of the issue and one thing you changed.