Insert text comment
Can you please include the Insert Text Comment feature in the shared review? This feature is available in Acrobat Reader and in the not-shared COMMENT review toolbar. As a basic comment tool, I am quite surprised (and very frustrated) that this is not available for collaborative commenting.
Specifically referring to "Insert Text" as described here: https://helpx.adobe.com/acrobat/using/mark-text-edits.html#insert_text