Q7:Sometimes I can see the edit screen after recognition and sometimes the app goes into the Card Holder directly without edit screen.

Answer:

When you take picture of a single business card (like Picture 1), you will see the edit screen after recognition.
When you take pictures of multiple business cards, the app goes into Card Holder (like Picture 2) after batch recognition. You will see the business cards with question marks indicating that you need to verify/edit/confirm them.