Sign-in to HBO Max

Trying to sign-in to HBO Max.

My TV Package includes HBO Max.

Following the on-screen instructions on one of our 4 TV’s:

(Bedroom 4 – not the “main-box” TV)

I was able to get that TV to sign-in.

Attempting to sign-in on a different TV, in the same house (same Xfinity account);

While signing-in on my computer, it kept ending with “Create Your HBO Max Account” after entering the 6-character code and selecting “Xfinity” as my provider.  This “Create Your HBO Max Account” did not appear when I signed-in on the first TV.

How do I get the rest of the TV’s in my house to sign-in to HBO Max?