An EPG is schedule data supplied by the service or imported separately, then interpreted by the player.
The first question
Ask the seller how IPTV EPG and TV guide works on your device, in your location and within the stated plan. An EPG is schedule data supplied by the service or imported separately, then interpreted by the player.
Proof to request
Check the current time zone and whether the player successfully refreshed its guide. Ask for a current source page or written order summary, including the currency and any player activation fee.
The decision
Assuming an empty guide means the video stream is down. If the answer is unclear, use a trial or a shorter period before making a larger commitment.
What to do next
Open the relevant brand page and check the original supplier information before ordering. For a technical issue, write down the device, player, connection and one reproducible example. For a price question, ask for the full charge in the currency you will pay.