EAD renewal Texas Service center -Delivery problem

[riz123]

Hi Friends,
I sent documents to TSC for my EAD renewal by USPS.When I track online on USPS website , its says that notice left for pickup and second attempt for delivery will make again.By the way i sent by Express mail with required recipt signature. I guess this is happend because TSC has PO box address. Does any one had this kind of issue. Please share your experience.

[txh1b]

Nothing to worry.They pick it up next day after signing from PO box

[riz123]

Thanks txh1b