I am currently getting acquainted with JA Alpha on Joomla4 on a standalone PC with xampp. For reproduction purposes I created a bare installation of joomla4, installed the template t4 and necessary extensions. All versions recent.
Following the instruction there are two differences in the screens to fill and the result is less then optimal (see screenshot)
In MenuItem-> Contact Display Options the Display Format selector is missing
In Component->Contact->Display the Display Format is missing.