Thank you for providing that information guys!
I can confirm that it is currently working on a WiFi connection, please do keep me posted I would love to know the results of your troubleshooting and will continue to monitor the going offline issue and forward accordingly. It would also be a good idea to submit a support ticket with screenshots so we can track both issues further:
You both seem to be using US Model TV’s so you can reach support using the following:
US: 1-866-813-2404
US: support@smartthings.com
I hope this message finds you well!
^SamsungZell