Birth by Sleep Birth By Sleep Tracking Issue

OK before i start I'm not exactly sure where this goes so if somebody could move this for me than that would be appreciated it.

i'm having some trouble tracking my order of this game this is my tracking number RT048540804HK i tried putting this in at usps.com and ups.com and also http://app3.hongkongpost.com/CGI/mt/e_mtaenq.jsp but it didnt work
can somebody help me please?
I ordered it on friday from ebay( the seller has alot of positive feedback) and it said it shipped friday

I tried the last link above(was told by the seller) and this is what i get:
"The tracking result of the item (RT048540804HK) is presently not available. Please try again later."
it says i also should put in my "Enquiry Reference Number (if available)" which i do not have

Can anybody help me?

Anybody please?!