You might want to check July 31 to see if there is an order there near the end of the day. Given the various time zones that can be involved, orders sometimes arrive in "August" your time but were made in "July" in the buyer's time zone. Several times I've located the source of non-matching records that way.
Try what Allyn said; it looks like this may have been true in your case from what I can see. Separately, have you checked your Spam folder? We recommend that members either whitelist the etsy.com domain or add the pertinent email addresses to their address book to prevent any of them from being mistakenly sent to spam. It looks like the Etsy email was delivered; let us know if it isn't in your spam folder!