New post not showing up

FYI, my site is https://livingvintageco.com/.

The full post is also showing up here just fine: https://feeds.feedburner.com/LivingVintageCo.

OK, this has gone to strange to more strange.

I just found out that what I’m seeing on my site when I access https://livingvintageco.com/2013/09/friday-favorites-from-living-vintage/ is NOT what everyone else is seeing. I can see the blog post title and date, then the Shareaholic share buttons and related posts and the “Leave a Comment” box. If I scroll down further on the page, I see the entire post. (I can provide screen shots).

However, when my followers access https://livingvintageco.com/2013/09/friday-favorites-from-living-vintage/, they are seeing a 404 error.

Also, at the suggestion of my theme designer, I deactivated all of my plug-ins one by one, and refreshed https://livingvintageco.com/2013/09/friday-favorites-from-living-vintage/ each time. She thought it might be a plug-in that might be causing the problem. However, this exercise revealed that a plug-in is NOT causing the problem.

After I got done with deactivating and reactivating plug-ins (and also deleting plug-ins that I haven’t used), I noticed that my Feedburner widget was gone. I mean, it just flat out disappeared! So, I went and looked at Appearance/Widgets. I was using the Genesis E-News widget, but now it’s just gone. I didn’t delete it. I wouldn’t know how.