Hi @braga - Can you try to login QuickSight from AWS management console. Try to login from the aws user from which you have created your quicksight account. You can see all details in QuickSight from this user.
For an administrator, ideally you should see all option. For this issue, can you please raise a ticket to AWS support team ( link - Creating support cases and case management - AWS Support) so that they can see this and advise you.
Regards - Sanjeeb