My Galaxy Note 2 7100 cannot connect to my iMac. With AirDroid downloaded, I followed the initial screen steps without result. Easiest method first, I hit the photo button to register on the icon on the home page. Four little yellow marks appeared on the screen but nothing connected. Then I tried entering the URL given. This requested the password; I entered the password given at the bottom of the screen, but it didn't register. I tried my own password for the wireless modem - no good either. The password box timed out but retrying would not work. What is missing please?