Server Version#: 1.25.2.5319
Player Version#: 8.27.2.29938
The guide data is not providing any TV listings beyond tomorrow at midnight. It just stops scrolling once you reach that time tomorrow.
This just started happening recently. This makes it hard to schedule recordings that are going to happen in the future.
I am able to view much more (about 2 weeks) on the Plex for Windows app.