the problems are here:
Not all page`s links will redirect to www... but still point to http://customdomain. com instead of opening www.customdomain, they are: Active Topics, Replies, Unanswered topics, My posts My, uploads, Subscription, Mark all as read, etc.
user can not login via www coused the login`s link point to http:// customdomain not http://www. customdomain... NOTE: after the user enters a user name and password, and click the login button.... then the site automatically redirect to http: customdomain. com that should remain redirect to http:// www customdomain com..... this causes the user fails to login, or fails to ask for a password
instead of using this 
Please Read Olso: We Need this method on Posting
Last edited by kami (2016-12-23 19:04:33)