Sudden problem with Jetpack Publicize and Linkedin

Today I received a message on the page of my draft post that I should check my connection with LinkedIn. The connection was broken. I logged out of my admin page, cleared all LinkedIn cookies in my browser (chrome), logged into my admin page, and tried to add a new LinkedIn connection. When I provided my LinkedIn email and password, the attempt to connect failed. I received the following message from LinkedIn:
“The partner did not properly implement the authentication protocol”. I have Jetpack v2.6 installed. What is my next step?

My website is http://www.mytechanalyst.net

Thanks,

Stu