I read a lot of topics about this issue but none of the solutions I found applied to my case.
The image I’m trying to load is from our CDN:
TwitterBot is not blocked, in fact, if I change my UA to “TwitterBot/1.0” I am able to retrieve the image.
This is the temporary test page I am running through the validator to debug this: https://montebrblog.wordpress.com/2015/09/30/hi/
And the meta tag in the HTML is:
<meta name="twitter:image" content="https://uberflip.cdntwrk.com/files/aHViPTIxOCZjbWQ9aXRlbWVkaXRvcmltYWdlJmZpbGVuYW1lPWl0ZW1lZGl0b3JpbWFnZV81NjBhYjk0NjU0MmI1LnBuZyZ2ZXJzaW9uPTAwMDAmc2lnPTBjZGFkZjkwYTRjZmUzNDI1NzE3NzQwODQ2ZDM5MzA0?w=1400" />
(Note that the ?w=1400 is added by WP but it doesn’t make any difference)
When I run https://montebrblog.wordpress.com/2015/09/30/hi/ through the card validator no errors are thrown and the meta tag twitter:image is actually fetched, but the image won’t display.
Am I missing something here?