Please Note: this guide has been verified and tested using Joomla version 3.8.10, downloaded and installed locally on a dedicated server. Some steps in this guide may differ if using Joomla.com's online service.
In RD Station Marketing, click on your account name in the top right corner and select Account;
Check if the website address you typed in the field Account site is correct. The Tracking Code must be installed only in this domain;
Copy the Tracking Code by selecting the option Copy Code. The Tracking Code is different for each RD Station Marketing account;
With the Tracking Code copied, access the dashboard of your Joomla site;
In the Joomla dashboard, click the Template Manager or, in the top bar, go to Extensions > Templates;
In the list of displayed templates, find the same one used on your website and click on the title link;
In the file list of the chosen template, select and edit the index.php;
Paste the script obtained in step 4 of this tutorial just before the </body> closing tag and click Save:
Done! Now the Tracking Code is installed on your Joomla website. We recommend clearing your browser's cache memory after this procedure. The cache clearing process varies depending on the browser, but is usually found in Settings > Advanced > Clear browsing data;
To validate the installation, re-access the tab Tracking Code and click the Check If you want to check some specific page of your website, enter the full path in the field destined to the page address and then click Check once again.