Since a few days I am going mad in trying to get the cards work for my website using the Yoast SEO plugin. From my understanding, everything looks correct, all the meta and such. For debug reasons I also did add a robots.txt that allows * for the twitterbot.
But no matter what I do, it doesn’t work and I keep on getting this from the validator
INFO: Page fetched successfully
INFO: 2 metatags were found
ERROR: No card found (Card error)
Any suggestion or hint about what else I might try?