Tara on "Latest post not appearing on home page."

try a few basic troubleshooting steps:
- Flushing any caching plugins you might be running, as well as server and/or browser caches.
- deactivating ALL plugins temporarily to see if this resolves the problem. If this works, re-activate them individually (one-by-one) to find the problematic plugin(s).
- If that does not resolve the issue, try switching to the WP unedited default Theme for a moment using the WP dashboard to rule out any theme-specific issue.