I have a slingbox 500 and I am using a Samsung note 5. The chrome cast icon showed up once and then never came back. I tried restarting the app, restarting the phone, unistalling the app, force stopping the app. both the app and the sling box are up to date. the sling box is connected to the tv with hdmi and composite audio video cables and connected to wifi. Anyone know what how to fix this?