An email I just got from Amazon:
I hope this e-mail finds you well. Thank you very much for patiently waiting for my answer.
I’ve been checking regularly with our technical team on their progress with resolving the age range issue. It appears the issue is more complex than expected and we’re still working hard to get a solution for you.
I wanted to send you a quick e-mail to let you know the findings so far:
Since Amazon uses certain characters to classify books according to their content, it tends to be quite limited when it comes to character recognition. In the case of “Safe Is Not An Option,” although our platform gave you the chance to set the age ranges as 8 (min) and 18+ (max), the website is not displaying the (+) symbol because this character is generally used to determine when a book is of mature content or not. Since the book is targeted to people that are 8 and up, the system is finding a contradiction due the title being categorized as children’s, while being also set as an adult book because of the ’18+’.
We are aware indeed that what you wished to communicate is that the book was written for all people starting at age 8; even so, due to legal and international marketplace matters, the store has determined that the ‘+’ sign next to the ’18’ number makes reference exclusively to adult or erotica content, which results in a classification restriction. Due to this, the website removes the ‘+’ sign automatically and replaces it with the single ’18’ number to make your book fall within the appropriate ranges for children and adults.
We are still working to find a way to have the ‘8 – 18+’ displayed on your book’s page. Still, if by any chance the platform was unable to digest that entry, what I’d recommend to do is leave the age ranges as they are, and within the book’s description, you may clarify that the book is indeed intended for people aged 8 and up. I’ll let you know how everything goes!
I hope this information helps explain clearly the situation; I’m very sorry for how long this is taking, but I greatly appreciate your understanding!
I’ll be in touch again with an update as soon as possible.
Thanks again for your patience.
I’m kind of amazed that I’m the first person in Kindle history who wanted to show that a book could be enjoyed by children of all ages.
[Afternoon update]
I’ve at least updated the book description to say that it’s suitable for all ages.