We rarely get these complaints, but when we do, our investigation reveals that another tool was used. Please don't mix LinkedIn automation tools to boost your engagement on LinkedIn.
A while back, we implemented an internal tool called Lempod Shield which protects our customers, after which we no longer had customers reporting their accounts blocked.
We recommend you log out of all LinkedIn sessions by going to Active sessions (linkedin.com) and clicking on "End these sessions" and then log out of LinkedIn on your web browser. This will ensure that any other services that are using your login will no longer be able to use it.