I can't understand. I have several offers on my TR page. They say something like this. BALLY'S LAS VEGAS Offer Code: xxxxxxxxxxxx Valid 11/01/2015 - 12/29/2016 Go online or call your host for best available rates. Must Book by 12/20/16. I go online put in the code and tried all kinds of dates each time I just get this msg: Attention Your offer was not applied. The offer code you entered could not be applied to your search criteria. Continue to book our best available price without applying your offer? or this: xxxxxxxxxxxx is not applicable for the selected Check In and Check Out Date. Please adjust your stay dates, or select Rate Calendar to view availability. How the heck are you to know when or when you can't use it and what the offer even is for sure?