gre笔考的地点问题我今年6月要GRE笔考,之前收到笔考确认函是说在上海交通大学的考点,可是这个月又收到一封信,把地点改

gre笔考的地点问题我今年6月要GRE笔考,之前收到笔考确认函是说在上海交通大学的考点,可是这个月又收到一封信,把地点改到了什么east china normal university,这是怎么回事啊?我发邮件询问后，他们的回复是这样的；Regarding your inquiry:Please note,at this time all the test centers in China are closed or have no available space to take the exam.The test center you are registered at,10607- EAST CHINA NORMAL UNIV (ICNU) is the closest test center available to your location.Thank you for your inquiry.We appreciate the opportunity to assist you.If you have additional questions,please contact our Customer Service team at (866) 473-4373 or (609) 771-7670,or visit our Web site at www.gre.org If you contact us via e-mail,please include all previous correspondence or a summary of information regarding your inquiry.意思是不是考场坐不下了，所以把我的考试地点换了？那为什么之前要寄上海交大的准考证呢？