Feature request: display Ad Widget for specific referrer link

Hello!

Another wpmudev plugin (Pop Up Pro) has the feature to display the Popup only to visitors who arrive from a specific link.

This feature would be GREAT to have in the Ad Widget plugin! There is already the feature to show only to visitors that come "from a link" - it would be ideal to define a specific link URL, or a root URL.

Is there any easy code that would let me achieve this feature already now?

Is there a chance to see this feature implemented soon into the Ad Widget plugin?