mlb keeps asking me to sign in

I have the apple tv 4k

Recently the mlb app

Every time I launch it it will ask me to sign in it's like the Apple 4K TV is not storing my user ID password

It never used to be this way

I've tried uninstalling the app reinstalling it except it's pulling the app off the cloud so it gets the same old information for the application

Is anybody has any ideas or info if you would be greatly appreciated I tried calling MLB they said it's an apple issue in the contact Apple