There are several ways to edit an article, for example:
1. On home page, you can click the button "Write yourself" and paste the id of your targeted article into the box.
2. In the url of the article you can change the following part: /articles/recx to /edit/recx.
3. The most simple way is to click the "Edit" button at the article page.
It means that the page was attacked/unrightfully attacked and changed/vandalised. So to protect it we locked it so nobody can edit it. Some pages may be locked automatically, so if you feel like it has been an accident/mistake, please contact us.
It is easy, simply head to our contact page - which can be found at /contact or by clicking a link on our main page that says "Contact"