Site Name Change

I just made a huge mistake. I am new to elgg, so this is not something I expected. I went under advanced settings and changed the name of my site from "elgg" to "community". The site stopped working so I tried to go back and change it, but it won't let me change it. It still says 404 Not found. What can I do to solve this issue?

Beginning Developers

Beginning Developers

This space is for newcomers, who wish to build a new plugin or to customize an existing one to their liking