Nice gallery, good photography and well implemented!
I have some input, which are just my own personal opinions of course:
# Your background image is nice separately in terms of design, but I am not sure it suits your gallery as background. When thumbnails and images are displayed, it looks a bit "amateurish", although your photos are NOT amateurish ... Especially on the nature photos ... I would consider a more mellow background, perhaps something similar but without the cubes themselves, as to remove distracting background elements?
# For your "Whats New!" page, you are aware that you can add links to the galleries and photos you are referring to? Might be more interesting for visitors if they can actually click to view the items you have added. Internal links work like this:
#/content/folder/
#/content/folder/image.jpg
Just point to the folder or image, and use # in front of the path.
# You seem to be using Imagevue X2.5 beta still. Perhaps consider upgrading to latest release from Monday, since you are still setting this up? It fixes a few issues, and has some improvements:
https://www.photo.gallery/blog/imagevue-x25/
Upgrading is quite easy. Just read the "General upgrading" paragraph near the bottom:
https://www.photo.gallery/documentation/upgrade-imagevue/