I have problems with customs. So you reccomand me to send the invoice (the one on my account on bitmaintech,com)? Or what? Should I wait?
I doubt the fact that Bitmain shipped without an invoice - probably the customs trying to verify the price on the documents.
Tell them to check the package and there should be an invoice included.
Also, did you not order an Antminer before?
Tell them it's the same product.
What did you pay last time?