Integration with S3

Hi,

I do not get integration with Amazon S3, i have installed

AmazonS3 7.x-1.1 and Commerce File 7.x-2.0-beta3

I configured correctly Amazon, but when i tried upload licence file the path is:

www.mysite.com/?q=es/system/files/my-file.jpg

The option in the field file in upload destination are:

Amazon S3
Public files
Private files

but is not posible select

I do wrong?

sorry for my english