The Chromecast player controls aren’t working on my device.

If the player controls become unresponsive, the device you're trying to cast from may need to be refreshed.

If you are using an iPhone or iPad, first, try force-closing the app by following these steps:

1. Double-tap the Home button.
2. Swipe left or right until you see the app.
3. Swipe upwards on the app preview to close it. 
4. Tap the Home button to return to the Home screen, then try casting again.

If there continues to be a problem, restart your device by following these steps:

1. Press and hold the Sleep/Wake button until the red slider appears.
2. Drag the slider to turn your device completely off.
3. After 10 seconds, press the Sleep/Wake button to turn your device back on.
4. Once your device powers on, open the app and try casting again.

If you are using an Android device, first, try force-closing the app by following these steps:

1. Select Settings from your device's home screen.
2. Select Application Manager, Applications or Apps. (If you can't find your Application Manager, refer to your device's manual or contact the manufacturer for assistance.)
3. Select the app and tap 'Force Stop.'
4. Open the app and try casting again.

If there continues to be a problem, restart your device by following these steps:

1. Turn off your Android device by holding down the power button.
2. Confirm that you want to turn off your device.
3. Press the power button again to power your Android device back on.
4. Once your device completes restarting, open the app and try casting again.