[n_ary]

Offtopic: PayPal shares more than we think it does. I've had issues where certain merchants asked me to confirm identity by sending copy of utility bill for address I had on PayPal account. I thought my address is private so sent a bill for my siblings house where I also paid the bills for internet, but they reported that address is not same with PayPal, so I argued a bit but eventually had to send one for correct address. I think that, PayPal doesn't share CVV but merchants can view all personal info attached to my PayPal account.

[CharlesColeman]

That doesn't seem too weird to me. Wouldn't most merchants necessarily have your address in order to provide services to you (shipping would definitely require it, for instance).

[Iggy173]

In the interest of giving PayPal some potential benefit of doubt, it could be that they're simply returns a match/no-match on the address as a fraud-reduction step or something.