If you were gifted a book, are a fan, family member, friend, follow or have previously reviewed a book by an author or any ghost of a chance have a virtual connection-- you can not share your opinion on the book.
Yeah, AMAZON may delete it, that's if they ALLOW you to post it. Unfair discrimination and here you are a paying customer.
Worse if you're an author because obviously you can't be a paying reader/customer with an opinion. They've taken review rights away from some, PERMANENTLY.
If you have read any of my books, please leave a review on their blog page. **I Value Your Opinions. Thank you.