Re: multiple issues please help
1) I’m able to register and see my newly-created profile on your website. Your users have to activate their account via email before logging in.
2) Did you setup the Buddypress forums correctly under the “Buddypress > Forums Setup” menu in the WP admin area?
3) Make sure your wp-content/uploads directory has the right permissions. Check out this article for more info:
http://samdevol.com/wordpress-troubleshooting-permissions-chmod-and-paths-oh-my/