There used to be a report button for exactly this purpose
Wonder why they took it away
I don't exactly remember when, but I think it went away around the same time we lost the ability to comment. I'm not sure though. It was available in chapter on the left side and it looked like a flag. You had pre-set options of what you were reporting or you could use a custom report that you typed in.
Aww man that was a dark time fr LOL
I hates not being able to read peoples thoughts on chapters so at least we have that back ;-;
Definitely nicer now that we can comment again
If there is one that I can't find please let me know so we can get this removed