When the "Show Tracks" setting is switched on all targets show their track. When switched off, a track is only shown for a target if it is selected by tapping on it. The default is off.
The launch URL allows third party apps or a URL embedded in an email or text message to launch AvTraffic. Try entering "avtraffic://" into Safari.
While SkyDemon has been added to the list of supported EFBs for auto launch, at this time it is not implemented in SkyDemon. Any SkyDemon users that would like this feature to work are encouraged to contact SkyDemon and ask them to register the url "skydemon://" to their app.