Is anyone else having trouble using even some of the basic features? For example, I can open a comment, but it doesn't seem like there is any way to close them (I try clicking the checkmark and nothing happens). You also can't seem to edit the comments once typed.
Thanks for surfacing this. If you click to "tools" button to the left of "compile", you'll see a list of comments, and you can resolve them from there. We'll keep improving and fixing things that might be rough around the edges.
EDIT: Fixed :)