DO NOT DOWNLOAD THIS APP. If you have any problems you CAN NOT CALL THEM THERE IS NO PHONE NUMBER, well that's not true there is one number for a voice mail in Canada that will start by telling you that "this voicemail is not monitored". I work at a hotel and can tell you that I have seen people wait for 4 hours waiting for text message response and the average is 2. Hopper is NOT properly integrated with most property management systems and there's a lot more but I'm out of space