Go to System → Settings → General
Set This crucial setting in AbanteCart controls whether your store to allow Downloads (Digital files). If customers make orders with downloadable products this disabled setting will stop them from being can sell and provide access to digital products (downloads)
How it Works:
Enabled: When enabled, AbanteCart allows you to add downloadable files to your products. Customers who purchase these products will be able to access and download the digital files associated with their orders.
Disabled: When disabled, the download functionality is completely turned off. Even if you have downloadable products in your catalog, customers will not be able to access their downloads after purchase.