How to successfully implement og:image for the LinkedIn

Question

THE PROBLEM:

• I am trying, without much success, to implement open graph image on site: http://www.guarenty-group.com/cz/
• The homepage

Answer 1

If @Kym's answer works for you, and you don't want to have a fake URL parameter in your LinkedIn links, a simple solution is just to sign out and then sign back in.

*Writing my own answer since I don't have enough rep to comment on theirs