USCIS显示Card Was Delivered To Me By The Post Office，但是没有收到EAD卡

大家好，我目前OPT状态是：
Card Was Delivered To Me By The Post Office.
[align="center"]On January 8, 2019, the Post Office delivered your new card for Receipt Number YSC1990037XXX, to the address that you gave us. The tracking number assigned is 920559015370864460XXXX. You can use your tracking number at [/align][align="center"]tools.usps.com[/align][align="center"]in the Quick Tools Tracking section. If you move, go to [/align][align="center"]egov.uscis.gov[/align][align="center"] to give us your new mailing address[/align]
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[align="center"]但是我只收到了I797绿皮纸张和SSN，没有收到EAD卡！我听说EAD卡和I797是一起邮寄过来的，但是我只收到了I797，没有收到卡这个该怎么办？[/align]
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[align="center"]我下周和公司说要入职，现在还没有收到卡，而且查不到任何信息，请问这种情况应该怎么办，是我的卡邮寄丢了吗？[/align]
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[align="center"]跪求解答，谢谢大家。[/align]