Twitter card working on validator but not on timeline


I have a twitter card working on validator just fine. Url is
But when I share on my timeline (@BatouSan, tweet is been favourited) I see the embedded media but on the player I get an error icon.
How does this work on the validator but not on the timeline?
Any hints would be very much appreciated.


Hi Lorenzo, my assumption is that when the card is rendered in a timeline, the untrusted certificate on your server causes an issue when the player URL request is made. If I attempt to visit your player URL in a browser, I get the following error:

The site’s security certificate is not trusted!

You attempted to reach, but the server presented a certificate issued by an entity that is not trusted by your computer’s operating system. This may mean that the server has generated its own security credentials, which Chrome cannot rely on for identity information, or an attacker may be trying to intercept your communications.