The arrival date depends on the efficiency of your country's postal service and customs inspection process, so please contact your local post office or wait for more time.
If overrun the shipping period, you still don't receive the package, please contact your local post office or head office. Because the sender's post office should not know the status until the package was returned back if it was unclaimed.
Important: If a package is unclaimed and return to us, we will just refund you the product cost, not including shipping charge
Airmail (no tracking service):
Tracking: Maybe you can track the mail on your country's postal website.
Express mail (EMS):
Tracking: Track on your country's postal website.
Sender end original tracking site:
Taiwan postal website
DHL:
Tracking: https://www.dhl.com
Note: It may need several days to enter tracking number into your country's postal tracking system.