怎么看EAD card的tracking number？

1/3 new card is being produced,
1/9 Card Was Picked Up By The United States Postal Service. 打开下面Tracking number的链接，里面显示已经寄到。但是我没有收到ead，只收到了approval notice，上面显示EAD和approval notice是分开寄的。那怎么才能看到EAD的tracking number呢？