Step 1: After enabling Firewall, click on the arrow to the bottom-right of the Firewall card.
Step 2: Click on Blocked IPs button on the bottom-right corner of the Security card.
Step 3: Here you can see the list of IPs that are blocked from sending requests on your website.
If you want to unblock any IPs on this list, select them and click the Unblock IPs button.
Read more: How do I unblock IPs?