@Tony Levy Most of the "magic remotes" use 2 different technologies to support the buttons. Some use regular "IR" (Infra-Red) like standard remotes, while other buttons (like the HOME button, and the ballistic "red cursor") use Bluetooth (like a wireless PC Mouse).
Test that your Bluetooth functionality is working on the TV side by pressing the Home button. If it works OK, and you can select your TV APPS with the left and right, then the Bluetooth side is working, and the issue is likely to be the remote itself, possibly the ballistic motion detector "chip" inside it.
If the Home button does NOT work, check out how to Re-Pair the remote with the TV Bluetooth. Try this if pairing is the issue: