Photo card always shows the same picture


#1

Hello,

Recently got Twitter’s approval to use photo card on http://davidesquimal.com, which is a custom domain used on a Tumblr blog.

The problem is that the picture displayed in the photo card is always the same one, no matter what post I tweet. Examples:

https://twitter.com/davidesquimal/status/429587873327640577 (the photo does not matches the actual photo on the site)
https://twitter.com/davidesquimal/status/429588152160768000 (actually I just realised it only shows on the previous tweet. This one and the next are not working)
https://twitter.com/davidesquimal/status/429589099314298880

This is the code I typed on my website:

<meta name="twitter:url" content="{Permalink}">
<meta name="twitter:site" content="@tumblr">
<meta name="twitter:creator" content="@davidesquimal">
<meta name="twitter:card" content="photo">
<meta name="twitter:image:src" content="{PhotoURL-500}">

Could anybody help me guess what is going on?

Thanks