我刚来的时候是F2身份，我之后申请学校，录取之后，我申请F2转F1，可是学校OISS把我的资料寄到了错误的地方，并且不可追回。所以我的入学时间从春季入学推迟到夏季的暑假学期入学，学校重新给我申请的暑假学期入学的I20，期间，系里给了我秋季开始的GA offer。五月份我拿到F1签证之后，去学校报道，并更新I20（这个好像都需要吧），但是OISS的人，告诉我不需要。下个星期就要签GA合同了，所以前段时间我去办SSN,被告知信息不符，回来去OISS查询，才知道除了这么大的事情，OISS忘了给我更新的我信息，现在我的状态应该是属于非法滞留。
-Then, your status is still valid and your presence is legal. The justification for my conclusion is that: before your change of status from F-2 to F-1 was approved in May, your status was F-2, thus you were not be qualified to take any course in Spring Semester. After your F-1 was approved in May, your status has been F-1 until now based on the old I-20. Because your school does not update your record in SEVIS system with your new I-20, your new I-20 is not effective yet though it has been issued to you. Your F-1 status currently is based on the old I-20. So, you just need to ask your school to update your information based on the new I-20 (it is better to ask the school to issue another I-20 with the effective date on the start date of Fall Semester and put this I-20 information into your record in SEVIS). Then, you can study and apply for the SSN to work in the Fall Semester, not need to file F-1 reinstatement. It only takes a few minutes for your school to update your record in SEVIS. The problem for your SSN is that you showed the new I-20 for the SSN application, which has not been put into SEVIS, and that is why 被告知信息不符. If you had used the old I-20 for SSN, you would have got the SSN.
如果老师还需要知道什么信息，请告
