Help me log in to Apple TV on my Vizio. I have Direct Tv but it comes with all these apps one being apple tv for which I have a free trial but won't accept my new password even after validation

I'm trying to log in to Apple TV on my Vizio tv I guess using the apple tv app. I don't have an apple phone I only have the acct for Apple music and for my trial use of apple tv. I just changed my password so I would be able to log in on my TV but it's not accepting it, It keeps saying I have the wrong password when I know better. What am I supposed to do