Product Downloads Distribution
With WHMCS, you can setup products that have downloads associated with them. This is useful if you want to offer software, templates or other files for purchasing. With the download distribution, WHMCS will automatically handle the download permissions and only allow the items to be downloaded by customers that purchase the associated required product and only when that product is active in their account.
You need to begin by adding the download to the support center downloads section. This is done in Support > Downloads > Add When adding the download, you need to tick the "Product Download" checkbox to activate the download restrictions for that download. This is shown in the screenshot below:
Once the download has been added, you can then enable the download on products in the Setup > Products/Services > Edit Product pages. This is done from the Other tab. You can select multiple downloads to be associated with a product by holding Ctrl while selecting them. This is shown below: