Can't download Xia Yu Yao from Dreamtonics site

Since the new updates just dropped for the 3rd party vocals I was getting their installers to keep them for myself in case something happens.
When trying to get Xia Yu Yao installer from the Dreamtonics download page here: Dreamtonics Download she is the only vocal that I can’t get, it shows the message: Product Download Not Allowed when I enter my activation code.
Does anyone know why it’s happening?