Thumbnails not appearing in WebGallery

First, I setup my webpage via Adobe Muse. Published it. I can view that OK on Chrome.

In LR CC I created a Web Gallery. I uploaded those images to a WebGallery via LR CC that I pointed to my lungrunner.businesscatalyst.com site.

That went well and I could then see my new Web Gallery group of photos online.

Then I began to add more pictures, each time Uploading to the WebGallery. Some of the photos came from Collections. Others from a Folder. It seemed to be fine as each time I added a few photos I "refreshed" my site by Uploading again.

I believe it still was OK. Then I began to have troubles...

First, I changed the Appearance in LR. I changed the GridPages from 3.x3 to 4x4. I repeated the Upload. But when I went on my site, it looked weird. I had 3 across and then down a line I had 1 image.  I could not seem to make it 4x4 on my Browser. I tried 3x4 and again could not see them that way. In fact, I think I saw only text and no imaging. Text meaning, I think it was the Photo File Name. Not sure.

So, I went back to 3x3 images on the Grid.  During the day I also unchecked Show Cell Numbers. I think I adjusted Image Pages to 1,160 px. I also added a Caption with Custom Settings ( to look like this: Date (Month DD, YYYY)  Camera: Model Exposure: Exposure...with spaces between the YYY) and Camera (which I typed in the word Camera) and Exposure: ( I typed in the word Exposure:) and the actual Exposure data with LR.

I hit Upload to refresh again. And then I see this....

Vancouver and Courtney

I do not recall when I uploaded the images that now have blank thumbnails. They may have been the last ones uploaded. But I am not sure.

THANK FOR YOUR HELP!