Because they are a grey market vendor... They buy from non normal habanos channels and then chop the barcode so habanos SA doesn't know who the grey market vendor bought them from.I have noticed on all my orders from several good vendors they remove the barcode section of the seal before they ship, I'm curious on why they do that. Because it is the easiest way to verify the box.
If you buy from a LCDH you will always get a barcode.. And a few other vendors.