I had been writing on AC for over 6 months. I haven't written regularly but did only 2-3 articles per month. But today I logged in and found that my account was banned temporary and I needed a W9 form to come out of suspension. I am not living in US and I can't provide a US form. What could be the possible reasons for this ban? Is there a way I can get my account without submitting the form? Or I just need to create another account? Does AC keep a watch on our IP addresses ?