Typically, if selecting a country/server to select to, you should appear as being in that country or location when verifying your location on IP geo-location websites, such as http://whatismyipaddress.com/.
If you are appearing in other locations, you may be re-routed due to usage of Peer-to-Peer (P2P) traffic, such as Torrents, on servers that do not support P2P. If so, you can learn more by reading this article: https://support.nordvpn.com/hc/en-us/articles/206939499-Peer-to-Peer-traffic-with-NordVPN
If that is not the case, or you are already trying to connect to a P2P-compatible server, you may be using a different VPN service in the background that might be running at your workplace, your Antivirus/Firewall, or web browser. Try turning off these services and see if the IP address location changes back.
If none of the above solutions address the issue you are experiencing, please contact our Support Staff for assistance: https://nordvpn.com/contact-us/