Hi,
Can you please provide me your Live URL where i can see your website and source codes?
Maybe your joomla template has a CSS rule to hide those product image
can't be sure. I need to see your website to figure out. Doesn't make any sense to me by looking at the screenshots.
About your last question;
Virtuemart 2.0.xx doesn't support selling digital products. If you are using a 3rd party extension to include this feature, then you should ask help from the developer of that 3rd party component. I can't help you about it as i have no idea what kind of structure they have used. Since almost everybody uses templates for Virtuemart these days; they should be experienced with integrating their extension into 3rd party templates. So you should better ask help from them, it would be more effective.
Regards.