Hello!
I've edited sample.php of my template (locally on computer with FileZilla) and now it don't shows the sidebar, footer, control panel and other components. I've returned the backup, but problem still there. Normally it will be seen like that.
As I have returned the backup I think the problem will be not in code but with some attributes with file on the server. I remember this problem in past with any file I edited of this theme, but don't remember how I resolved it.
Help me please, I think someone had and resolved this problem yet. Thank you very much.