The maximum number of connections each day on LinkedIn is 80–100. Because you might have up to 30,000 1st level relationships with this social network, it's critical to target the people you want to see in your network and who will therefore count in your 1st degree relationships.
Furthermore, thanks to the well-known 'follow' icon, users will have no choice but to subscribe to your account.
If you add too many people in a short period of time or if you have too many pending connection requests,
LinkedIn may impose limits.
As a result, you should stick to the quotas and avoid using programmes like Dux Soup or Linked Helper that don't consider your account's security.