Hello Irina,
The problem may be related to the Linkeding cache, what happens is that Facebook or Linkeding cache everything, which means that the changes are not picked up immediately by either of them.
Try verifying your URL in the LinkedIn Post Inspector
To the URL add a variable at the end, for example
What this will do is force the metadata to be collected
Check if you can see the image with this.
A greeting
Answered : 06/10/2020 3:53 pm