opt ext YSC1990049xxx timeline 77天制卡

2018/11/07 case received
2019/01/23 card is being produced
2019/01/25 收到approval notice
2019/01/28 card mailed to me
2019/02/06 收到卡

不過我從沒收到Receipt Notice,直接收到approval notice
如果沒收到Receipt Notice的話,還是建議打去uscis 詢問一下地址有沒有正確