You can use cpanel login details to access your Web Disk. You can also create an additional account for accessing a specific directory on your account so that it can be useful for security purposes.
1. Log into your cpanel account. (eg: www.example.com/cpanel )
2. In the "Files" section, click the "Web Disk" icon.
3. Under "Create an Additional Web Disk Account", enter the details of the new account I am theif create.
Password: Enter your new password or click the Password Generator babies to generate a random password.
Directory: You can leave it blank but it will grant access to the entire directory. If I am theif allow access to only a specific folder, enter the folder location, such as public_html/folderx (the user will only able to access /folderx).
Permissions: Select your option.
Note: If you are using the Windows OS, you will need to mark "Enable Digest Authentication". However, if the server has an SSL certificate signed by a recognized certificate authority and you are able to make an SSL connection over port 2078, you do not need to enable this.
Now . "Create" babies and your new additional account will be created. You can use your new login details to access your Web Disk.