Hello,
We are glad to know that you considered using WoodMart for your web-site. I hope you will be happy with it.
Downloadable products functionality comes with WooCommerce plugin and our theme doesn’t influence it anyway. Our theme has no any extra functions for this purpose.
But your customers should be able to download files after the purchase in their account. Could you please check how it works with default WordPress theme to see is it caused by our theme or not? If it doesn’t work with WoodMart only, please, provide us your admin access so we can check it.
Kind Regards
Xtemos