我寄了三次成绩单,但是学校依然说成绩单上面registrar的签名不符合要求。我觉得已经完全符合的了,然后发信让他们指出错误,结果他回信如下:The Coordinator of International Admissions is now working on your file / documents. Your documents will be sent to an authority in China for review. You will be notified by email when we receive the required information. 这个是什么意思呢?我不太理解我的材料发到哪里了,我应该怎么做?请各位指点。