I have finally found a gallery plugin which seem to function for me, and I’m in the process of changing all the galleries. I hope to be able to add again soon all details for the paintings (media, date, size…and especially credits and inspiration) which have been missing for a long time now!
I haven’t figured out yet how to improve the galleries (working on that!) but anyways I have added a new gallery for the Tuscan Dream collection !!!
The sidebar is now back!
At this point the new website just needs a little adjusting, and when this will be done, the latest artwork, which is already completed, will be added too.
In the meantime you can visit the Mythology, Portraiture and Bucholic galleries to see the last 4 works uploaded–which were not here in the last version of the site.
…the server, right in the middle of all the editing for the new website….
Hopefully the issue will be solved soonest.
Here are a couple of provisorial links while we wait for the navigation in the sidebar to be back :
THE GALLERIES
THE PROFILE
AVAILABLE WORKS
Sorry for the inconvenience…… 
Welcome to the new version of [nuit divine], art by Amarilli Arenosto (me).
Navigation is on the right under the section “Pages”.
Italian version of the website will follow soonest !