Hello,

Why almost of my photos ( downloaded from Google Images ) cannot be rotate? I try to find any photo that have non NULL value and I found, but if statement with that data never will become true.

Check it in admin-edit.php and fix ( or I do that faster :-) ), because 1 photo have not NULL value, but have that value = string(18) "1: Normalnie (0°)"

Well, that particular image says it is in the correct orientation so naturally it will not get rotated.