Updating my account location / flag
You can only change your country of registration (and profile page flag indicator) by doing any of the following:
• Adding a secure phone number if you do not have one yet
• Updating your secure phone number to a local one if you are staying in another country
This is because a change in geographical location does not automatically update your profile's country of registration for security purposes. Most account details can be changed, but your country of registration cannot be edited, as shown below.