Why piwik Analytics data so big difference between Google Analytics and statistics, such as our website piwik Analytics statistics 7,012 unique visitors, but using Google Analytics statistics is 82,012 unique visitors, a visitor’s geographical location is not accurate
Did you read the FAQ?
Use the geoip plugin for more accurate locations.
By default, Piwik ignores visits by bots, users with DoNotTrack enabled, etc. Certain browser addons can also bias Piwik vs GA (eg AdblockPlus).
You should check the order that your scripts are loaded. High latency or errors can prevent later scripts from loading or running.
After you install the GeoIP plugin, click on the corresponding country in use, code will appear, please look at the annexes