Facebook, twitter buttons missing

Iam the developer of https://www.pepelwerk.com/ We had set up the blog and we used your plugin to social media share for each post. See : https://www.pepelwerk.com/what-inspired-the-pepelwerk-vision/

The facebook and twitter share buttons are missing now. No idea what happened? I was displaying before but not there now..

Please help

The page I need help with: [log in to see the link]