Did you see this: https://www.yamahasynth.com/ask-a-question/recreating-classic-analog-synth-sounds#reply-104098
?

Downloads from yamahamusicsoft show up in your account.

https://shop.usa.yamaha.com/welcome-to-yamaha-musicsoft

... if there's not information there to help you, then:

1) Upper-right is the word "Dealers" with a drop-down arrow that looks like a "V". Click on the "V"
2) Choose "My Account" from the list. This assumes you're signed in. Sign in first if you haven't already
3) Left-hand side click on "My Library"

You should see something like:

Order # --------------- Date ----- Title ------------------------------------------------------------- Status -- Remaining Downloads
XXXXXXXXXX ----- 3/17/18 -- MONTAGE Expanded MONTAGE Expanded ----- Available Unlimited

Note that the word "MONTAGE Expanded" (the bolded one above, it's a different color online) can be clicked for the download. When you hover over this section, it says "start download"

Yamaha is re-launching lots of stuff including yamahamusicsoft. So things are changing. Right now, at least for me, it's not the most intuitive interface to use. Since downloading purchased products is a common thing to do - it'd be easier to have a global [DOWNLOAD PURCHASED CONTENT] button somewhere on the top of the screen - which brings you to the order page. Then the order page should have a [DOWNLOAD ORDER] button (in a recognizable action color) instead of having you "figure it out" by trial and error. There is an empty box on each order which may be a broken graphic for the download button. So it may just be a work in progress.

That there's a second question on this starts to reveal the need for a more intuitive interface.

Thank you.
Yes, I've got the right order display as shown above, but there is no link available. I can see "links" and below "Montage Expanded" but "Montage Expanded" is not a link !!

Ok, your link was of the order ID. The link you're after is:

https://shop.usa.yamaha.com/en/downloadable/customer/products/

Here's a picture

... since Yamahamusicsoft seems to be in flux (updating, some things don't work quite right yet) - I rechecked minutes ago. Still works as described (for me).

If all else fails, use the "Contact Us" link at the bottom of the page on Yamahamusicsoft.