It's likely that the site uses oAuth. Your login on a mobile device grants you a token that you can use to access the site. Changing your password may not revo

It's likely that the site uses oAuth. Your login on a mobile device grants you a token that you can use to access the site. Changing your password may not revoke the token (it could). If you logout from your mobile device and log back in it should require your new password.