Directory not read

Question

I have a problem with a user's folder. ls -la shows the permissions as ???? instead of drwx.

I tried with

sudo chmod ug+rw -R /path/folder

to reassign the value but it doesn't change. How can i make the folder writable by the group? The user is able to read and write, but the group fails.

screenshot:

output text:

gra@xxx:~$ ls -la /home/EnGi/D/
ls: impossibile accedere a '/home/EnGi/D/BKDiscoDT30': Permesso negato
ls: impossibile accedere a '/home/EnGi/D/..': Permesso negato
ls: impossibile accedere a '/home/EnGi/D/.': Permesso negato
totale 0
d????????? ? ? ? ?            ? .
d????????? ? ? ? ?            ? ..
d????????? ? ? ? ?            ? BKDiscoDT30
gra@xxxx:~$ sudo chmod ugo+r -R /home/EnGi/D
[sudo] password di gra: 
gra@xxxx:~$ ls -la /home/EnGi/D/
ls: impossibile accedere a '/home/EnGi/D/BKDiscoDT30': Permesso negato
ls: impossibile accedere a '/home/EnGi/D/..': Permesso negato
ls: impossibile accedere a '/home/EnGi/D/.': Permesso negato
totale 0
d????????? ? ? ? ?            ? .
d????????? ? ? ? ?            ? ..
d????????? ? ? ? ?            ? BKDiscoDT30
gra@xxx:~$