It has been a while since I went into my shop to check things, but a buyer's concern prompted me to go in and have a look.
I think in the past, once the purchase of an ebook was complete, the buyer would receive download links and use them to get the product.
Now it seems, after purchase, the buyer is taken to a page with buttons to download the product. But the buyer is also sent download emails.
I tried it, buying six ebooks. I was taken to the page with buttons. I downloaded the files. Then I went to my inbox. The six emails with download links were there, but when I tried to download the files I was told the links no longer worked.
Seems very confusing, though maybe I am missing something.