Can No Longer Get Watermark to Appear

Hello there!

First off, thanks for this plugin! I uploaded all of my photos into the media library, and then went back in and tried to bulk add my image watermark to all images.

When I view an image in the media library, it says the watermark has been applied, but it does not show on any images. Only one here:
https://tinyurl.com/yvxbdcr2

And this is an image I uploaded in the last few days.

I have a video that I created to show all of the various settings I have:
https://vimeo.com/879454475?share=copy

I work with a developer, and they told me that the issue I’m having is that my images are .JPG and the plugin only supports .JPEG. I wanted to see if you thought that might be the issue?

I did install EWWW Image Optimizer, but it is currently deactivated. And I think most of my images were uploaded without EWWW compression.

I’ve tried clearing my cache, turning off any caching programs on my server, along with anything on the site itself, but I am at a loss.

Any suggestions you could provide would be vastly appreciated!

Sincerely,
Amber

The page I need help with: [log in to see the link]