You can change the URL of click to tweet button by using the filter. you can change the URL for a specific post or you can change URL global.
Filter: ssb_ctt_url
Example Usage:
function custom_click_to_url( $url ){
if( 35 == get_the_ID( ) ){
$url ='http://wpbrigade.com';
}
return $url;
}
add_filter('ssb_ctt_url','custom_click_to_url');