Redirect after User Activation [closed]

Paste this code in your bp-custom.php file or, if you prefer, your active theme’s functions.php file:

add_action( 'bp_core_activated_user', 'wpse_70289_activated_user_redirect' );

function wpse_70289_activated_user_redirect( $user_id ) {
    $registered_from = get_user_meta( $user_id, 'registered_from', true );
    wp_redirect( $registered_from );
}

I haven’t tested this code myself yet, but it should work just fine.

References:

• http://codex.wordpress.org/Function_Reference/get_user_meta
• http://codex.wordpress.org/Function_Reference/wp_redirect