245号段，两周了没有收到tracking number

4.1 case received
7.22 case approved.
大概一周多前收到了ssn和approve letter，
uscis case status显示”card was mailed to me“已经经两周了。
”If you do not receive your card by August 6, 2019, please go to ww w. uscis. gov/e-request to request that we send your new card to you.“
求问该怎么办？




补充内容 (2019-8-7 04:34):
update， 邮寄地址填的学校，学校已经收到了但忘了给我发邮件。从始至终在uscis没看到tracking number