If Friendly URL in Prestashop is not working for you, try my method of resolving below:

Step 1 – Login to your back-office.

Step 2: Navigate to Preferences -> SEO & URLs (SEO for Prestashop older than v1.4.2.5).

Step 3: Give every page a friendly URL except for index.php as shown below –

Step 4: Go to the Modules tab to disable and re-enabled CMS block -

Step 5: Lastly, go to Tools -> Generators and generate a new .htaccess file with Friendly URL check-box checked –

And you’re done with it. Hope this method works for you…