php - Is account temporarily suspended because my app? -

i'm not strong english grammar. sorry if word weird.

i have develop first app facebook campaign php. app allow "fans of campaign page" registers information such name,phone,email , record database on cleardb(i'm using heroku) ask 3-4 friends test application must click "like" on fans page or "like box" in app , go registers (if user click "like" in "like box" it's navigate user register page on app automatically).my app request permission ('user_likes') before first used

one of friend.when click "like" in "like box" of campaign page in app.her account locked , facebook show message

your account has been temporarily suspended suspicious activity has been detected on facebook account , has been temporarily suspended security precaution.it account compromised result of entering password on website designed facebook.this type of attack known phishing.

she can't account , must wait until facebook allow security check. i'm not sure it's because of code or else make app unsafe? , i'm sure friend didn't weird on facebook.

if because of code.then part of code should go check or must rewrite?

my php code initial , login part

  $page_id = 'xxxxxx';     $app_id = 'xxxxx';     $app_secret = 'xxxxx';     $app_namespace = 'xxxxx';     $app_url = 'https://apps.facebook.com/' . $app_namespace . '/';     $scope = 'user_likes';        $facebook = new facebook(array(                'appid' => $app_id,                 'secret' => $app_secret,                 'cookie' => true,                 'sharedsession' => true,                 'trustforwarded' => true,             )); if(!$user) { $loginurl = $facebook->getloginurl(array(         'redirect_uri' => $app_url,         'scope' => $scope         ));         print('<script> top.location.href=\'' . $loginurl . '\'</script>'); }