My Safari Tab Groups aren't syncing between iPhone and Mac
As above, my Tab Groups were previously in sync with an older iPhone, but when I upgraded to a new iPhone 14, the Tab Groups no longer work. They have effectively disappeared from my new iPhone, although I have one Tab Group that is common to both that I created after the phone upgrade. All the others that appear on my Mac are not appearing on my iPhone.
I have followed all the official advice so far in terms of checking the latest OS versions, being on 2-step verification, etc.
Help