Unable to render Card preview and WARN: Not whitelisted


Hello. I have a problem with a card validation (https://www.screencast.com/t/rgtQlLuV). I get the following messages: “Unable to render Card preview” and WARN: Not whitelisted. Is there a solution to this problem? Here’s the link to the page where I added meta tags: http://snaptest-siteb-6.us-west-2.elasticbeanstalk.com/tx01


There are no meta tags related to cards in that page. Please review the pinned troubleshooting post carefully.


Aren’t these meta tags? https://www.screencast.com/t/sLFPvQvnIo


Yes, they seem to be, but they do not appear for me in Chrome view-source (they do show in developer tools), or when retrieved using the Twitterbot user-agent at the command line. If you’re injecting them via Javascript, then this will not work as the cards crawler cannot execute these scripts.


Thanks, I rewrote the logic of the meta tags delivery and got an “approve”. But the page which received this “approve” doesn’t show the card. http://snaptest-siteb-6.us-west-2.elasticbeanstalk.com/tx01


I am trying to set up twitter cards and am getting the same problem.

I used the code at this website for Large Image cards: http://www.superwebtricks.com/twitter-summary-cards-for-blogger-blogs/amp/

Obviously changing the relevant bits where told. Is there a problem with this code?

My blog is at www.theglobalobsession.com.


Okay, I tried some other code and now it works if I go to my blog’s main page at http://www.theglobalobsession.com. But individual posts don’t work - for example when I put in http://www.theglobalobsession.com/2017/01/djibouti.html the log says
INFO: Page fetched successfully
INFO: 18 metatags were found
INFO: twitter:card = summary_large_image tag found
ERROR: Required meta tag missing (twitter:text:description)

How do I fix this?

I’m not an expert at using HTML. You may already have gathered…


Okay, so now I tried the instructions here:

Now the cards work for individual posts but not for the standalone domain (basically the opposite of what I achieved in the previous post).

Why can’t I find a solution that works for both the domain and the sub-pages? Any ideas?


It is difficult for us to directly support Blogger configurations as they depend on knowledge of setting up conditional code in Blogger templates. This other thread has a solution that seems to be working for some people.

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