Thanks for reporting the problem; we got a couple other similar reports. Probably there was just a temporary glitch with our Transaction Log server that was causing recent orders to not be displayed there, which has now cleared up.
We are now seeing affected orders listed in the reporting sellers' E-junkie Transaction Logs, which confirms we did process those orders, and their "Processed by E-j (MST)" timestamps show they were processed within a few seconds after completion of the buyer's payment with PayPal (or instantly for Free Checkout), as usual.
If any affected buyer still has not found their thank-you email(s) with the link to their download page, ask them to check their Spam folder in case they wound up in there, and mark them as Not Spam if so. They can also try searching their email for anything
from:firstname.lastname@example.org if they still can't find it anywhere.