Some apps treat the program guide as a separate source from your channel list, meaning you need to add an EPG source URL on top of your playlist login rather than assuming the guide loads automatically with your channels. If that separate source was never entered, or was cleared during an update or reinstall, every channel shows a working stream with no guide data attached to it. This is the single most common reason the guide is blank everywhere while playback itself works fine, and it's a settings gap rather than anything wrong with your subscription or the channels themselves.

This is a different fault from a missing EPG source, and it points to individual channels rather than the whole setup. Program guide data matches to each channel through a channel ID field, and a channel with a blank or mismatched ID pulls nothing from the guide even though the source feeding every other channel is working correctly. You can confirm this by checking a few other channels in the same category; if they show a guide fine, the gap is scoped to specific channels. That's a source-side mapping issue, not something a device setting fixes on your end.

1. 1Guide missing on most channels: check your EPG source URL
2. 2Guide missing on a few specific channels: it's a channel ID mismatch on those channels

A shifted guide, where program times are consistently off by a fixed number of hours, is almost always a timezone mismatch between the EPG source and your device rather than bad data. The guide feed publishes times in one timezone, and if your device's timezone setting doesn't match, every listing shifts by the same amount in the same direction, which is different from a random or scattered error pattern. Checking and correcting the timezone in your device or app settings realigns the whole guide at once, rather than needing to touch anything channel by channel or re-enter any source URL. A shift that changes with daylight saving time is the clearest sign this is the cause.

A post-update regression is a distinct, recurring cause separate from a channel ID gap or a timezone mismatch, and it's worth ruling out first if the timing lines up. Updates sometimes reset saved settings, including a manually entered EPG source URL, even though your playlist login and channel access are untouched by the same update. This looks like the whole guide broke on its own, but the actual cause is a single setting that reverted during the update process. Re-entering your EPG source URL after any update resolves this in most cases without needing to touch your login or subscription at all, and it's worth checking again after every future update too.