Thumb Problems video and standard post

Hi,

i don’t where the problem could be.

When i want to share a video post like this: https://wetraveltheworld.de/the-world-beyond-the-world-eine-expedition-zur-arktis/
i embed a vimeo video with the video format. Responsvie. But when i want to share the video post on facebook, g+, etc. no thumbnail shows up. Only a small picture of my profile pic.

I get a video thumbnail with the video thumbnail plugin. It works. But the thumbnail doesn’t show up.

I thought perhaps with you plugin it coul work. But nothing has changed.

When i use a link like this: https://wetraveltheworld.de/the-world-beyond-the-world-eine-expedition-zur-arktis/ and add it to the debug tool: https://developers.facebook.com/tools/debug/ i get this error: More Than One OG URL Specified Object at URL ‘https://wetraveltheworld.de/the-world-beyond-the-world-eine-expedition-zur-arktis/’ of type ‘article’ is invalid because it specifies multiple ‘og:url’ values: https://wetraveltheworld.de/the-world-beyond-the-world-eine-expedition-zur-arktis/, https://wetraveltheworld.de/the-world-beyond-the-world-eine-expedition-zur-arktis/.

I don’t know how to solve this eror problem. Perhaps this is the key? I read someone else had the same issue. I also have jetpack.

Also when i share a normal post like this: https://wetraveltheworld.de/koh-phangan-wie-du-im-paradies-das-nichtstun-lieben-lernst/ there’s an issue. When i post it to g+ the correct thumb shows up, but facebook chatches some pics from the content and not the thumbnail i want to show.

Thank you for you help.

https://www.ads-software.com/plugins/facebook-featured-image-and-open-graph-meta-tags/