Hi @gstambo , thank you for submitting a question.
Please see the following Microsoft Support article about Planner comments.
Why can't I see or add task comments?: https://support.microsoft.com/office/comment-on-tasks-in-microsoft-planner-fd4aedde-7785-4cd0-96ee-122fbc9140e1#bkmk_whycantiseeoraddtaskcomments
Thanks,
Alison