Answer
If you wish to change the language in which the trading platform is displayed, you can change the settings in your profile.
To find these settings, navigate to your profile and select 'Persoonlijke Instellingen' ('Personal Settings'). In the WebTrader, this can be found by hovering your cursor over the profile-icon on the bottom left corner.
To find these settings in the App, open the menu by tapping on the three horizontal bars in the top left corner and then tap on your name.
Once you have opened the 'Persoonlijke Instellingen', you can find the option to switch between languages under the subheading titled 'Language'. The languages you can choose from are Dutch and English.