Hey Melanie, I don't know if I completely understand what you mean by Reporter Panel Text, but the entries shown in the panel can be edited via the Pop-Ups in Map Viewer (the title is what you see on the entry before you click on it and all of the stuff you see once you click on an entry is the pop-up as well). The form functionality adjusts what the user sees when attempting to submit an entry (which aren't where comments are meant to be made).
I have been stumbling through this app trying to figure out how it works, so I hope this is helpful!