Hi Richard,
Sorry for the unwanted delay. Yes I could login with VPN.
The template you are using is not from us, and the image addon is overrided there. So I just renamed the site.php file of that overrided addon. This enables the default image addon fron SP Page Builder to load. Thus problem solved.
https://share.cleanshot.com/jSXgqzFd
Editing file "/templates/jb_growth/sppagebuilder/addons/image/site.php" in template "jb_growth".
Please check that image addon, I have changed the demo image to a rndom one from your images, and it works fine.
https://share.cleanshot.com/WVz1VWD4
If you want to use the overrided image addon from your template then kindly ask your template provider about it. They are supposed to help you there, by correcting the code.
Best Regards