Step 1. Please go to your site Panel for example here: http://www.yoursite.com:2082 and login with your username and password.
Step 2. Please find cliparts File Manager and click on it. In the popup window select -Web Root- and click "GO".
Step 3. Then please find file named index.html select this file and on the top of your cPanel find button named "Edit" and click on it.
Step 4. Now scroll down a little bit until you find Nav section.
Step 5. Now try to change "Service" to "Products" and save file.
Step 6. Now let's go to our homepage and check your results, Services has been changed to Products.