Hi,
I run from the root
chown web4:client2 /var/www/clients/client2/web4/web
AND
1. I can successfully access to the website through
www.salx.mywebsite.com 
))))
2. I can access successfully to the folder website
)))
BUT
if I access via ssh to the folder website I reach the following path
/var/www/clients/client2/stanmx.qaligo.com/web/home/salx
I can reach also the root path /
(((
About your last question 'Which ISPConfig version do you use?'