Hi @dwheditor,
If the images are loaded from dwhimages.s3.amazonaws.com, it means that the files are offloaded to the bucket dwhimages and served from there.
To serve the offloaded files via Cloudflare, the bucket name should match the CNAME you need to use. You’ll need to create a new bucket with the correct name, as buckets cannot be renamed: https://docs.aws.amazon.com/prescriptive-guidance/latest/defining-bucket-names-data-lakes/faq.html#q3
You then need to copy the offloaded media files from the original bucket to the new bucket. This functionality is available with the pro version of the plugin: https://deliciousbrains.com/wp-offload-media/upgrade/
When that’s done, you may proceed with setting up Cloudflare: https://deliciousbrains.com/wp-offload-media/doc/cloudflare-setup/
If you wish to retain the bucket and still want to use a CDN, you may opt for CloudFront: https://deliciousbrains.com/wp-offload-media/doc/cloudfront-setup/
Please let us know if you have more questions!
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https://deliciousbrains.com/wp-offload-media/pricing/#guarantee