Issues with Cloudflare verification

What is the name of the domain?

What is the issue you’re encountering

When trying to connect this site, we are having some users who cannot get past the Cloudflare verification page. We have two firewalls in our network that have the same exact configuration. The only difference between the firewalls is the public IP addresses that face the internet. When traffic passes through firewall A, we can get past the Cloudflare bot verification. When traffic passes through firewall B, the Cloudflare verification gives a loading icon and then fails to a blank white screen.