Hi.
I set this:I also created the thumbnails with the right dimensions and put them into the resized subfolder.
It works perfectly.
But on mobile the thumbnails are wrong. I see that Modals created by himself another series of
thumbnails 576x432. I don't know why...
In the Media tab of Modal options I set Resize Images to No.
How can I fix it?
You can see it here: www.marcofioretti.it/istituzionali/la-squadra

I didn't care about it, since the gallery worked on desktops. The problem was on smartphones...
Anyway, I switched it off.
Now my thunbnails are not used at all, neither on desktops nor on smartphones. Simple shrinked images are used instead.
I can't figure out the problem.
Please, help.

Done.
Now it works fine on smartphones as well.
Thank you!
PS: maybe a little tooltip about the smartphone which don't use retina displays could be useful.