Sidebar isn’t saving

Simple task. I want to replace the images that are too large with smaller optimized images I create using PaintShop Pro. The graphic for this example is for the Video graphic link: adr-mat-products.
This original graphic was done by an ex-web designer.

I went into the ADMIN WIDGETS customize SIDEBAR and clicked TEXT see Videos.
(The image I want to replace is already uploaded to my media library.)

Here’s the CSS or HTML already in place. I don’t know how to do any of this so the idea is to only replace the image information and save.

<div width=”100%” style=”;clear: both;margin-top:10px;”>
<div style=”width:50%;float:left;”>

</div>

I want to replace the …uploads/2018/10/adr-mat-products.jpeg with new image file name: …/uploads/2010-01/adr-mat-products.png

I notice when I click SAVE the ball keeps spinning. It isn’t saving hence updating.

I’ve cleared my WP cache and my browser cache. So I’m convinced it has to do with TopShop theme side of things.

I also tried turning on the accessibility feature which created an error with ViperCache. I backed out and turned the accessibility feature off again. My website appears to be working.

Originally (after backing up my site) I deleted the image from the Media Library. This created a blank image but the link and text beside it was still active.

Strangely after several attempts I got text to fill the image area. I think it’s the Alt text that filled the box but still no image.

I’ve since restored my site from the previous day which is why the picture is now there. However I’m still unable to get the sidebar to save.

I did read online these kind of problems exist in past posts but I don’t see anything that is helpful to me.

Anyone have a solve?

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