Your first step should be to check your orders. To do this, click on your user name in the top right-hand corner of this screen and then "Orders."
Be mindful that Priority shipping will only take effect once USPS receives your package. If the filling of your order was delayed for whatever reason, delivery of your order will also be delayed.
If you still have issues after trying the above, you can contact MCN at support@MusicCityNetworks.com