Yes, well i use Shop and Ship a LOT, like 3 times a week and Ebay works with SNS as long as your address is correct. Sometimes they mix up the package in case the seller didn't put the P.O box correctly.

All you have to do is contact aramex on www.shopandship.com via the Live Chat feature and give them the USA tracking number and the carrier, wether it is via USPS, DHL, Lasership etc... then they will give you your tracking number. Otherwise you can wait 2 more days it will surely appear.

Hope that helps.