Pinterest – The requested content cannot be loaded.

Hey,

(and sorry for my bad english 🙂

I have a problem with sharing a post to Pinterest. Sharing buttons are displayed automatically after the post content.

If i click on the icon the following message is shown:
The requested content cannot be loaded. Please try again later.

If i copy the link behind the pinterest icon, i get this:

http://www.pinterest.com/pin/create/button/?url=http%3A%2F%2Feppart.de%2Fabstract-shapes%2F&media=http%3A%2F%2Feppart.de%2Fwp-content%2Fuploads%2F2016%2F01%2Fimage-2.jpeg&description=Acrylmalerei%3A%20Abstract%20Shapes

The link works fine (in Browser). All contents will be loaded.

Can you help me please?

Please try it here: http://eppart.de/abstrakte-acrylmalerei-2/

https://wordpress.org/plugins/social-media-feather/