If they converted their profile to a LinkedIn Page (unlikely but possible), you cannot block a Page—only unfollow it.
If you need to visit their profile to monitor their activity or plan to re-block them later, make sure your profile viewing parameters are hidden. If they converted their profile to a LinkedIn
If the person you unblocked begins messaging you, commenting on your posts, or harassing you during the 48 hours, you do not have to wait for the clock to run down. You can report them directly to LinkedIn trust and safety. Navigate to the offender's profile. Click the button (next to Message/Connect). Click Report / Block . You can report them directly to LinkedIn trust and safety
According to official LinkedIn Help guidelines , the reason you cannot immediately re-block a user is that . This is not a bug; it is a designed security feature. Why Does This Time Restriction Exist? Click Report / Block
When you click the unblock button, several instant system adjustments take place. Understanding these changes will help you safeguard your account privacy during the waiting period.
Change your settings so that only your connections can see your last name or profile photo. Alternative Solutions