I’m working on this same issue.
Interestingly, when I’m in the admin back-end and go to Plugins > GeoIP Detection > Lookup and test my public IP address, it correctly returns the country ISO code ‘GB’. But when I visit the front end of my site, it is incorrectly matching the condition $userInfo->country->isoCode == 'US' statement and returning the string within.
Why might this differing behaviour be occurring? The Disable caching a page that contains a shortcode or API call to geo-dependent functions setting in options is checked.
