I don’t think it has anything to do with Cloudflare, but just to be sure, can you go to your profile and look at the list of last used devices? The locations in that list have a tooltip with the IP address. Is it showing the correct IP address?
My guess is that the MaxMind DB with IP addresses is out of date. You could try rebuilding the container.
@nbianca Correct me if I’m wrong, but I believe there is no background job for regularly updating that database and I’m not sure if Discourse picks up the changes when the maxminddb:get rake task is executed without a restart.