"Website Cannot Be Found"
I wasn't sure if this was the right place to ask this, but here goes.
I was editing a file using filezilla (it's early in the morning where I am, but I wanted to get my project done so I [was] working into the wee hours of the day), and saved, but it didn't save.  In fact, it logged me out.  I tried logging back in, but it said something weird (I don't remember what).  I tried opening my website domain, and it Chrome told me that "Oops! Google Chrome could not find youthunemployment.org".  What did I do?  Was my site hacked?  Can you guys help me?  Thank you very much!

My website is http://www.youthunemployment.org

EDIT:
I used cmd to ping my site, and I got a response.
This is my first website I've set up, so I'm really confused.

My host is 000webhost.com, and my domain service was namecheap.com.

I can still connect (and edit, or so it seems) on c9.io.  But I can't view them from the regular browser!

I mentioned Google Chrome.  The problem is also on IE.  I haven't checked other browsers.
"Website Cannot Be Found"
===

I wasn't sure if this was the right place to ask this, but here goes.
I was editing a file using filezilla (it's early in the morning where I am, but I wanted to get my project done so I [was] working into the wee hours of the day), and saved, but it didn't save.  In fact, it logged me out.  I tried logging back in, but it said something weird (I don't remember what).  I tried opening my website domain, and it Chrome told me that "Oops! Google Chrome could not find youthunemployment.org".  What did I do?  Was my site hacked?  Can you guys help me?  Thank you very much!

My website is http://www.youthunemployment.org

EDIT:
I used cmd to ping my site, and I got a response.
This is my first website I've set up, so I'm really confused.

My host is 000webhost.com, and my domain service was namecheap.com.

I can still connect (and edit, or so it seems) on c9.io.  But I can't view them from the regular browser!

I mentioned Google Chrome.  The problem is also on IE.  I haven't checked other browsers.