I seem to have lost the user permission to report anything. If that was revoked by staff, I didn’t get any message about it. Not sure if it’s an accident, bug, or revocation.
I have the button. Last time I tried, it said something like I cannot report at this time. It started happening at least a few weeks ago, but I honestly don’t know when the permission changed. It’s the same whether I’m reporting something with a manga or a comment.