Help with plesk (PHP)

[markacadey]

I have a website that is ready for launch. We have a problem creating
subdomains on the site.
The script we're using is working on other servers, but on a specific one that
we want, the server doesn't let us write that forlder.

I heard that this is a common problem with the plesk we're using.
The server doesn't let us access the conf forlder, and gives us this error:

Unable to change directory to /conf/: ls_dir_wrapper() failed: filemng: opendir
failed: Permission denied

If you know what I'm talking about, please bid.
Thanks.