A blank guide with working playback means the app successfully connected to your channels but the separate program-data feed either hasn't loaded yet or failed to match against them. EPG data is a distinct download from the video stream itself, refreshed on its own schedule that has nothing to do with when a channel starts playing, so a slow or interrupted refresh leaves the guide empty without touching playback at all. Give the app a few minutes after launch before assuming something's wrong, since guide data often populates later than the channel list does, sometimes by several minutes.

Shifted times almost always trace to the Firestick's system time zone setting rather than the guide data itself, since the EPG, the row of show titles and times under each channel, typically ships in a fixed reference time and the app converts it to local time on the device. Check the device's date, time, and time zone settings directly rather than digging through the IPTV app's own settings; a wrong zone on the Firestick shifts every show time by a consistent, fixed offset across every channel at once, which is a strong tell it's the device clock and not the guide feed.

Partial guide coverage usually means an ID-matching gap: each channel in the guide data has to match an identifier against the corresponding entry in the channel list, and channels added or renamed recently can fall out of sync until the next full guide refresh runs and reconciles the two lists again. This is separate from the channel itself being broken or missing entirely, and it typically self-resolves on the provider's normal refresh cycle without any device-side action needed on your part, so it's rarely worth troubleshooting further than confirming the channel itself still plays normally.

If opening the guide itself freezes or closes the app, memory is the more likely cause than the guide data being wrong. Player apps hold the full channel and guide dataset in memory at once, and that load becomes heavier as the visible channel count grows, with instability showing up past roughly 18,000 visible channels on Firestick hardware, which has less memory to spare than a phone or a smart TV running the same app. Hiding channel groups you don't watch trims what the guide has to hold and render every time you open it.