My OPT EAD expires in 1month. I have applied for I20 opt extension from my DSO but they haven't issued me yet saying my SEVIS is pending from USCIS. DSO said that they submitted 3 requests to USCIS to update my SEVIS but they have rejected all of them. As SEVIS is not updated DSO is not issuing me I20 opt extension. And also DSO doesn't have any information on what is the reason for SEVIS not getting updated?? In this situation what can I do ?? Whom do I need to follow up with ?? When I called USCIS customer care, they are not able to help me on SEVIS. Please provide your valuable inputs as I have less than a month before my OPT EAD expires. Thanks!