Block IP address through firewall doesn't see to work

Thank you for sharing a screenshot.

I see a duplicate of the IP 209.59.185.4 at first glance → remove the duplicate and leave only one.

May I ask have you tried blocking your own IP by looking up for your own IP (type in Google “whatsmyip”) and adding it here along within them, therefore wait for few minutes to apply the changes and check if you can access your Website or rather you are seeing “1020 Access Denied” page from Cloudflare?

Page Rules execute (first) before Firewall Rules as far as I know, that could be the reason why “it’s not working” as far as the requests are being redirected rather than being blocked?