I got this on the confirmation page after buying a Vyrso book, but I think this excerpt of the page is the same thing that shows up when you purchase any Logos resource for download.

It's a bit misleading, because reopening Logos 4 does not actually start downloading your new products. You do have to click on the message box to begin the download, and you do have to wait for that download to occur and then interact with the Logos status icon (can't remember if it's a right-click then click on the popup or what) to restart Logos again for the newly downloaded resources to be added to your library. This should perhaps be explained in the download instructions. Or at least make the wording less misleading, since it might possibly leave some people confused.