If anyone like me is struggling to get this done, you have to manually add your mime type to the allowed mime types array.
add_filter('mime_types', 'my_mimes');
function my_mimes($mimes) {
// add your mime types
$mimes['zip'] = 'application/zip';
return $mimes;
}
Using wooCommerce 2.3.11. The issue still exists as I cannot publish my *.zip files:
The downloadable file [name].zip cannot be used as it does not have an allowed file type. Allowed types include: jpg|jpeg|jpe, png, gif, mov|qt, avi, mpeg|mpg|mpe, 3gp|3gpp, 3g2|3gp2, mid|midi, pdf, doc, docx, docm, pot|pps|ppt, pptx, pptm, odt, ppsx, ppsm, xla|xls|xlt|xlw, xlsx, xlsm, xlsb, key, mp3|m4a|m4b, ogg|oga, wma, wav, mp4|m4v, webm, ogv, wmv, flv
