Apple TV 3rd Gen. Sign-in problems

So recently I changed my email and password for my Apple ID. I applied all these changes to my devices as well. But ever since I did this, my Apple TV will remember my password. I can sign-in just fine. But it won't keep me signed in for whatever reason. I have to keep doing it manually every time I use the Apple ID.

Anyone know why this is happening? It's should just WORK, right? But it isn't. And it's super frustrating. Some assistance would be greatly appreciated. Thank you! 🙂