Whenever I try to control my older generation Apple TV through Control Center, it can't find it. But the Remote app allows me to control it. Guess this is their subtle way of saying I need to shell out more money to upgrade. I've been waiting for years for a newer version to upgrade to though.
So glad to know I'm not alone. This has been driving me crazy. While rolling the time back seems to solve it, apps that require the correct time (e.g. Twitter) stop working. Not all beta versions are created equal, that's for sure, and it's the risk we take on as beta testers.