Oh, sorry,
‘nice name’ usually means the name you choose for displaying the name in the profile’s author, and it is the same that enfold uses for displaying the name in the ‘about loop’. The default name in the title is the user name, that I’d like to change for the other one.
Is it more clear now? Thanks for your help!

Thanks Ismael,
here is a screenshot illustrating the problem:
http://cordltx.org/gallery.png

-first row, images 1000 x 462
Flexible Masonry
-second row, images 1000 x 462
Perfect Automatic Masonry
-third row, images 705 X 256
Flexible Masonry
-fourth row, images 705 X 256
Perfect Automatic Masonry

I’m using the boxed layout, 1030px width
thanks again,
Antonia