I did my purchase on 5 Oct before the T&C changed and the last scorecard included it as a hit.

I now have exactly 36 hits posted, hopefully Netsol will post today and give me my last hit as I went for 37 to have an insurance hit. I don't see how US could enforce this as they can't see whether we used the 25 miles per $ link or the regular one. It could be a situation like Netsol (who won't give miles if you reduce the length of the email or hosting account). I tried to experiment but can't find any Teleflora product under $29.99. If you use a promo code, you have to overwrite the pre-populated US Airways promo code which would probably cancel your miles award.