To change your account flag, please follow these steps:
- Click on your username in the top-right corner
- Select Settings
- Scroll down to the bottom of the settings page and select “FLY YOUR FLAG ON LAND YOU OWN”
You can also select a custom banner at the top of the settings page.
- Click on your username in the top-right corner
- Select Settings
- Choose the option Profile Banner, on the left
- Click 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.