Problem sharing to LinkedIn: webpage's image not showing, only text.

When sharing a webpage to LinkedIn, it is not pulling the header image, only text. Can someone help?

@CZoghb Did you upload the the header image under Settings > Social Sharing?

Hey, thank you for your reply. Do you mean setting the social image as in this screenshot?

@CZoghb Yes, this image is supposed to show up on social shares. You can also give it a test on social sharing with this link: https://www.opengraph.xyz/

If you've uploaded the image and it's still not appearing on LinkedIn, you can try refreshing your browser cache.

Oh yay! That worked—thank you! So I need to go and upload the header images for social sharing on all the pages which we are thinking of sharing, then? By the way, what does General 1 mean? 

UPDATE: I just tried setting the headers on some other pages for social sharing and I see there can only be ONE image for that purpose??

Lesum, you have been a godsend today! You have been a huge help!!! Thank you! And may I hit you up again sometime? I am totally new at this.