So I would expect it to be cycling between layout IDs 27 and 26 as they are both scheduled to run from 8AM today. However I don’t see any log messages to indicate that it is changing between those layouts.
Perhaps you have some long running media on your layout causing it to wait around on a black screen until that media is finished (at which point it should move on).
Can you read this and see if that might be the case?
If not it would be useful to have exports of both layout 26 & 27 to see if there is something on there causing the issue. You could pop them in a drop box or similar for us to look at.