In some cases, FusionReactor may be behind a load balancer or CDN, or any other type of proxy that updates the source IP as seen by the server. It helps to see where the requests are actually originating from. For that, FusionReactor has an option for this:
See the Requests>Settings>Proxy, which lets you tell FR that you need it to use some alternative header for the “real” ip address..
You will see that in the “proxy header” field there is a drop-down, but it doesn’t show your specific header, rather a couple of the most common alternatives. Just paste the name of your header into that field and save the configuration changes.
Once you have saved this change, you should be able to check the Requests>History page to confirm that you now see the real IP’s showing up.