Also, could you try disabling the JFBConnect caching? Set the "Cache Duration" value in JFBConnect backend > Configuration >Advanced area to 0. We'd like to see if that error on the front end about the missing token/company name goes away with turning off caching.
If the problem still persists after caching, then we'd have to look at the code to retrieve the company name. If it's not solved by disabling caching, in /media/sourcecoast/themes/scsocialstream/default/linkedin.php, could you temporarily comment out or remove the block around line 34 for printing out the screen name? We'll be able to then tell if the token error is related to a problem retrieving the company name.
By the way, if you'd prefer to give us backend/FTP access to your site, we can debug this issue quicker instead of telling you to try different things. If so, send credentials through the Contact Us form and we can hop on in and start debugging.
-Melissa