Home page permalink problem

OK, I am using WP 3.6, themify theme, it is a multilanguage site (4 languages), I have qtranslate and qtranslate meta installed.

My website consist from home page + 9 pages. Home page is a post, without title.
I set Site title & Tagline under Appearance, and I have a table with prices and one photo in that post I mentioned,so that is my home page.

I set page titles and meta description via qtranslate META for all pages (including my home page), but there is no page title for home page, I mean it is not like I set it in the qtranslate META.

After some time I noticed that permalink for my home page is set like this: ww.mywebsite.com/164/
And when I open that address, I get page title for my home page as I set it.

I tried to edit permalink, delete 164 and leave the field empty, but it does not want to stay like that. So my home page address is left like ww.mywebsite.com/164/

When I click at HOME button at my website, ww.mywebsite.com is opened, not ww.mywebsite.com/164/. But the page title for home page is not the way I want it.

How can I set the permalink for my home page to be without that number, just ww.mywebsite.com??