Errors to save backup on Amazon S3

Hi,
I am having a lot of errors to save the backups on Amazon S3.

1 – When I tried to test the connection appears this error message: “[curl] 6: Could not resolve host: infinitywp.s3.s3-eu-west-1.amazonaws.com.amazonaws.com [url] https://infinitywp.s3.s3-eu-west-1.amazonaws.com.amazonaws.com”

2 – The error message of the process queue is “Backup site
Failed to upload to Amazon S3. Please check your details and set Managed Policies on your users to AmazonS3FullAccess.”

WordPress and IWP plugin is updated with the latest version.

Regards.

https://wordpress.org/plugins/iwp-client/