I checked the payment for the 5 batches in our groupbuy and 4 went to this address: https://blockchain.info/de/address/1FGAftzSTztFSB8LMwsrdCKTyqGY6zr3sU

The 5th, which in fact is our second batch, is still in the address i sent it to. It must be a bitpay controlled address. Maybe yifu didnt took it out or bitpay gave him other bitcoins.

But that should prove that this address isnt the only one containing chip batch payments.