Your hosting account has a File Manager that you can use to upload files to your hosting account.

To load files using the File Manager

Sign in to your Hosting-Mondial account.
Click Web Hosting.
Click the Manage option displayed next to the hosting account you want to use.
Go to the Files tab.
Go to the directory you want to use.
Plesk uses httpdocs as the root directory of the main domain name of your website.

Click Load Files.
Go to your local computer file and click Open.