How to connect Instagram Dark Post Ads to ManyChat Comment Automation?

Hello ManyChat Community,

I'm currently using the ManyChat Pro Trial and need help connecting an active Instagram ad to an automated comment-to-DM flow.

Instagram account: @platinum.963

Instagram Ad URL:
https://www.instagram.com/p/DfeXTQkAmlJ/

The ad was created directly through Meta Ads Manager and appears only as a sponsored ad (Dark Post), not on my Instagram profile.

I tried using both Quick Automation and Advanced Flow Builder with the "User comments on your Post or Reel" trigger.

Unfortunately, the ad doesn't appear in the available posts, and I can't find an option to manually enter its URL or Post ID.

My questions:

1. Does ManyChat support automatic DMs triggered by comments on Instagram Dark Post ads?

2. Is there a way to connect an existing active Instagram ad using its Post ID?

3. Can this be done without recreating the ad or losing its current performance?

My goal is to automatically send real estate project details via Instagram DM whenever someone comments on this specific sponsored ad.

Any guidance would be greatly appreciated. Thank you!