Basicstero gives a free reship if a pack is lost or seized.
Strange though if tracking shows it passed customs -- that would mean it didn't get seized. So it still may be moving in the postal system. That time-frame is still not too rare.
But don;t worry because if it did get lost in the system, the source will be able to see on the tracking that it was never delivered.
Try this tracking site (link below) to see if it shows any more details:
Free tracking System for China Post Registered Mail, EMS, ePacket
parcelsapp.com
I'm about to leave for weekend break.
I will check with you next week to see if you have any new updates or if you need some help. I have a lot of experience and should be able to figure it out or help get a resolution from Basicstero if it does end up lost.
I'll send you a PM now so we have a convo started and I'm here to help you if needed.
Have a good weekend.