I also sent 10 ETH to 0x8476e3ddf311da3e47b76d99f624635c1db8708b

I was afraid it was fraudulent after not receiving any tokens, and no one confirmed that address was correct.

My e-mail to them today got this reply:

"From the information you have provided, you purchased your tokens during the pre-sale. These tokens will be issued after the main sale is closed. You should have received an email that explains why this is."

And about the address:
0x8476e3ddf311da3e47b76d99f624635c1db8708b

They said, "The address is correct. That is the presale address."