If your website has HTTPS / SSL pages, to ensure that all your visitors actions will be tracked on all browsers, you need to check that your SSL Server is correctly configured. We recommend to take the SSL Server test, for the URL of your SSL Matomo (Piwik) server. In particular you should check that « Chain issues » is « None », otherwise some browsers (for example on Mobile devices) will not connect to your Matomo SSL Server and you will lose some visitor tracking data.

Previous FAQ: Configure Matomo for security