Amazon QuickSight must be authorized separately. To authorize Amazon QuickSight to access your Amazon S3 bucket. In the AWS Region list at upper right, choose the US East (N. Virginia) Region. You use this AWS Region temporarily while you edit your account permissions. Inside of Amazon QuickSight, choose your profile name (upper right). …
https://docs.aws.amazon.com/quicksight/latest/user/troubleshoot-connect-S3.html

