PrestaShop uses Smarty cache. Its cleaning is required if changes were made on the site, but they are not displayed.
To clear the Smarty cache, go to “Extra options → Optimization
» («Advanced Parameters → Performance
To clear the cache, you need to click on the "Clear cache
» («Clear cache
Additionally, you can disable caching and enable forced compilation settings:
For manual cleaning, you need to delete all files except
index.php, from directories:
You can perform these actions using filemanager or any FTPclient.