iOS 17 Contact Posters not working (Disabled)

Good morning all,

I have an iPhone 13 and iOS 17 installed since yesterday and unfortunately the contact poster function does not work for me as expected. I can create a contact poster, but when I call friends who also have iOS 17 since yesterday, it just shows a gray background. Am I doing something wrong? I have already deactivated the function 1x and activated again and also deleted all contact posters and created again, also a restart has brought nothing.

I look forward to your help.

[Re-Titled by Moderator]