[gethly]

I think that as long as you can provide physical address where you are able to receive mail under pseudonym, you can use nay service. The main point with these DNS testing services is to prevent them form linking your DNA with your identity. You could maybe even use your company's address or a friend or a family member. It should not matter much. Or try renting a Post Office Box. Or even using one of the mail forwarding services as they are usually able to forward your mail based on id on the recipient without then name of the recipient mattering at all.

[csomar]

I am not sure you understand the privacy implications. I did 23&Me and you do post your DNA only with an email address. These services can detect your relatives (siblings/parents/near-cousins) to close to 100% certainty. Which means they'll be able to deduce who you are from an anon. DNA.