The agent finds videos where your buyers are likely to comment, then reads the public comments under them. It does not require your social account password or cookies.
It picks the people worth contacting, for example someone asking about price or shipping, and saves them with the comment and the video as evidence.
Reading comments has a per-use cost, so it's off by default and usage is recorded. Large jobs are queued.
The product never sends DMs. When there's no public email, it suggests a short message you can copy and send yourself.