Click on the gear icon in your Reflector menu, then open the Preferences and click on the Advanced tab.
Ensure that the Logging Level setting has the Verbose option selected, then apply the changes and close Reflector.
Open the Console from Spotlight in your Menu bar.
In the console, click on your computer name, in the Devices section near the top of the left side of the window.
Then click on the Clear Display button at the top of the console window.
Once this is done, type in Reflector 3 in the search bar at the top right corner of the console window.
Finally, launch Reflector and attempt to connect.
You should see a large amount of information appear in the console. Select all of this text by clicking on the last line, and holding the Shift and Up arrow keys until everything is highlighted. Copy and paste this text into an email.
Please send us the logs so that we can see some more detail about what is happening on your end.