Detailed WAC Timeline

1/19 Mailed out
1/20 Delivered & Case was received
1/23 Check redeemed
1/25 Got receipt number in message & email
3/10 New card is being produced -> Case was approved
3/14 Card was mailed to me
3/17 Card was determined as undeliverable by the post office -> drive to local post office -> wait for 3 hours -> got EAD
中间还经历了回国，以及在临回美国前approve的事，但入境的时候receipt都没拿出来就过了，可能因为i20还有几天才过期