As of early Feb 2018 LinkedIn have officially depreciated a feature to let people see total share counts of URLs. See https://developer.linkedin.com/blog/posts/2018/deprecating-the-inshare-counter
This will impact CoverageBook in that we'll no longer be able to count social shares from LinkedIn for any online URLs you add to us.
We'll look to explore alternative options to access this data but for now we'll be unable to gather this information. It's likely that no tool will be able to give access to this number anymore.