Cant’t access index.php

Hi guys,

My blog : blog.arsln.org

The problem begun 2 days ago. Since there, i can’t reach my index.php file. And due to my site is unreachable too. I’ve tried everything but without success. And yesterday i’ve upgraded to 2.1.2 but the issue still accees.

But for example if you go to:

blog.arsln.org/indexxx.php(a file that doesn’t exist)

then suddenly a 404 site appear. You can see the site and all the stuff in my blog.

Any ideas how to fix it ?

Regards
Fatih