Ultimate Facebook -- Auto posts don't show on Facebook page timeline unless logged in.

Auto posts are being posted on my timeline, but isn't visible unless users are logged into Facebook. Some settings that I have tried in Facebook:

1. Ensured there are no country restrictions on my page and app.

2. Ensured there are no age restrictions on my page and app.

3. Ensured that each post privacy is set to "Public".

I have made several manual test posts to the Facebook page, and they are viewable to logged out users. But the auto posts made by the Ultimate Facebook are not. So it appears to be an issue with the Ultimate Facebook plugin.

I'm stumped and would appreciate some help.