Funny im stuck at the same part. I have done everything before this like change IP read emails change file permissions etc etc But I also cannot find the secret section.
I have however found the page you are supposed to report to but it looks like the page after you submit. Like a submit error page that reads:
We could not send you report due to the following reasons
1. The member does not exist or is not an administrator.
I have tried the ../ command to backtrack through it but it doesnt work I have tired as you stated the ?dir that you found hidden as part of the task. It just seems a bit silly that I cant seem to quite grasp it.
I read articles and forum posts on this and yet still cant seem to find it.
One article showed the following "?action"="members" but I tried multiple edits of this to no luck. action = ?*hidden dir* members *hidden report page* I even tried fiddling around with the "=" to no results...