The Twitter Card validator is not showing any errors on my test page; but, it does not render my image that is located within Azure storage (accessed through a public CDN).
I’ve added a robots.txt to the Storage/CDN, but it made no difference
Any ideas how to troubleshoot, as far as I can tell Twitter has access and the image is public.
UPDATE: This can be closed. For anyone having related issues, the storage container was incorrectly set to private; however, the Azure CDN was returning images successfully. It looks like it was trying to refresh the CDN version unsuccessfully. Updating the storage container to be public resolved the issues with the Twitter cards accessing the CDN location.