We are getting duplicate site address inserted in the notification link and can't track down the issue. It is looking like this

http://www.sitename.comhttp://siten.........etc.

So you see this link would never work due to the two urls being inserted.

Where is the notification link setup or what is it controlled by? Where are we going wrong here.
Thanks

Make sure that the "Site Address" on the settings page of the control panel matches the URL at the top of the browser. This may or may not include the www, but it does need the http:// in either case.