Sitting here scratching my head trying to figure out how to get my cards to show in a tweet. Everything validates fine, but when I try to share the link all I get in my tweets are text of the url. The url I am using is http://188.8.131.52/index.php?i=abcb569f2c15bc1941f43a32bc0f3551
I think you should try using a real domain rather than just using an IP address in your URL. I’ve seen that is a common issue when sharing card URLs.