When you want to block a member on LinkedIn:
Blocking a member from viewing your profile on LinkedIn can be done from your desktop as well as your mobile device. After you have blocked a member they would be on your blocked list and they would not be notified that you have blocked them.
Block a member from viewing your profile:
Open the LinkedIn app and find the profile of the person that you want to block.
Find the More icon in the top right of the screen and tap on it.
Now, tap on the dropdown menu and tap Report/Block.
Then tap Block on the member's name.
You would be asked to confirm for which tap Block.