First off, www is considered to be a sub domain. You need to point it at you domain, as mentioned below.
Second, did you add the www as a CNAME in the DNS manager for the selected domains? (It should be automatically added when you first enter the DNS manager after adding a domain and selecting it).
Also, why use www on a sub domain? (www.sub.domain.com) It is common practice to not use www for sub domains, only for the main domain (www.domain.com). Yet, the practice of using www at all is a fading trend
Second, did you add the www as a CNAME in the DNS manager for the selected domains? (It should be automatically added when you first enter the DNS manager after adding a domain and selecting it).
Also, why use www on a sub domain? (www.sub.domain.com) It is common practice to not use www for sub domains, only for the main domain (www.domain.com). Yet, the practice of using www at all is a fading trend
