I had been attending 12 credit hours. My GPA is around 3. I had never been out of status. The reason for my reinstatement was that i was supposed to be transfered within 60 days of grace period (which i was not aware of). Since my previous college didnt inform me of such grace period and the results of  SEVIS being released. Its real confusing. I have been asked to fill-up some I-539 and a letter from myself and  the petitioner stating my case. Who would be my petitioner.