You can download trading platforms for free via a link that will be a part of the Welcome email and HERE. Also you can download the platforms from MyFintokei zone.
Log in to your MyFintokei zone.
In the left menu, click on the "Accounts" section.
Find the specific account you want to trade on and click on the "Detail" button.
In the top right corner of the account detail page, click on the "Platforms" button.
Choose the version based on the device you are using (Windows, macOS, Android, or iOS) and click the download link.