I understand how to control cookies on my phone/computer. But, when I access Pandora on my Vizio tv/Comcast, I have to sign in every time I access the app? Not sure how to avoid that. thanks for any assistance.
You should remain signed in to Pandora on your TV as long as you aren't manually signing out after each listening session.
If you are still running into trouble with this, first make sure your device has the latest firmware by checking for a new update. If an update is available, try loading Pandora again once the update is complete.
If you're still having the same problem, then please try a few standard network troubleshooting steps:
Try connecting directly via an Ethernet cable rather than using Wi-Fi (if you have this option on your device), and see if that helps.
Try rebooting your modem and router and restarting the device.
Try removing and re-adding the app (if this is possible on your device).
You can also contact the manufacturer directly to troubleshoot your specific device and settings.