Logging onto Apple TV+

I have two different email accounts with Apple. The @me.com is associated with my phone, iPad and TV+

The other email, @yahoo.com which is about 99% of my online activity, is somehow associated with iTunes.

My problem is that when I open the Apple TV+ app in my Apple TV it wants my password for yahoo.com, and of course it does not see I already have an account for TV+ and wants me to do the trial.

How can I watch TV+ on my big TV? I’m doing fine on my iPad and phone. My billing shows I’m getting TV+, but again it is my other email @me.com.

I don’t see how to change accounts within the TV+ app.

Help