1. Log in to your Build A Rocket Boy account here.
2. Go to the Account Information tab.
3. Press the EDIT button next to Account Details.
   
4. Press on your current language and select whichever you prefer from the dropdown menu.
5. Press the SAVE button.
   

If you are unable to change your language, contact us at: https://support.buildarocketboy.com/hc/en-gb