I was also having this issue, but luckily I was able to get a copy from T-mobile (by signing into my t-mobile). And that receipt has the "order placed 08/03/2016" date on it. And it seems to be working as I haven't gotten an e-mail back from samsung saying differently this time.
So If you sign into your T-mobil account on computer and look at the recent orders placed (should be on the right side right after signing in) you can pull up the order information, take a screen shot of that and submit that as your image.
*edit*
Yes, I also ordered on the second. Right as soon as the orders went up.