The developer of the plugin is not responding to the messages in the support like 1 or 2 months, so no hope i think.
Meanwhile any modification on the EWWW plugin can make it work?
(I don’t know much about WordPress codebase)
I am using amazon s3 and cloudfront plugin and also amazon web services plugin.
I just installed the plugin and it is not uploading the compressed files to the CDN. While inserting the pictures it shows the compressed size and also points the url to the CDN but when i open the file the uncompressed file is showing up and its the same when inserting the photos.
Any way i got it working by placing the secret keys using the form.
I deleted the lines from the wp-config.php and everything works fine