The IP2Country mapping happens on the gateway. The association between countries and flags happens on the management.
Check SK92823 to update the GeoIP info manually. Be sure to install policy afterwards... just in case.If this doesn't help, then a call to TAC may be your next best thing. There are a few odd complexities that can be involved, including the AutoUpdater service not functioning correctly. Although, it could be as simple as a policy error, too.
I can't remember for certain if you'll need to have the Geo Protection policy enabled, but I'm mostly certain you do. I have one enabled on all of my customers, and theirs works; but causation != causality, tho.