Is something wrong with Facebook Debugger

I have tried to debug several of my links, from our News feed from my client’s website. But Facebook keeps saying there is something wrong - and Facebook doesn’t show the image that belongs to this news, as Facebook usually does. The size of what Facebook usually uses is: 1200x630 pixels. But then I read just now - that now Facebook wants 1080 x 1080 pixels. And I have tried to change that and got a new picture with 1080 x 1080. But Facebook don’t show this image? - now Facebook only wants to show the Favon Logo of our website to all links.
What is wrong??

Can someone help me?