To access the correct section on your Amazon Account, where you will be able to manage your reading list, click on the following link. You will find an overview of all your lists (including your reading list). The name of the list should sound like "Kindle eBooks".
Stefano, the list link you posted has message "We're sorry. The Web address you entered is not a functioning page on our site." FYI
Hello Pammo, thanks for letting me know about the inconvenience.
The link has been successfully changed and you can access the lists section where you should be able to verify the presence of the reading list (I can confirm that the system inserts mine in the wish lists section).