To change your account flag, please follow these steps:
- Go to Settings
- Select “Fly your flag on land you own”
- Choose one country's flag from the list
You can also select a custom banner at the top of the settings page.
- Choose the option Profile Banner, on the right
- Click the image to edit your Banner
Currently, it is not possible to hide your flag or to upload a custom flag. However, we are actively working on new features.
More information can be found here.