I know how need to do that.
Just tell me where is located that file in Osclass. Thank you.
I found that file.
Let say. If i ask which file, you need tell me this file: os-includes/osclass/formatting.php
This part need change from
// update 420, greek to latin
$cyr = array('α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','п','ρ','σ','τ','υ','φ','χ','ψ','ω','Α','Β','Γ','Δ','Ε','Ζ','Η','Θ','Ι','Κ','Λ','Μ','Ν','Ξ','Ο','Π','Ρ','Σ','Τ','Υ','Φ','Χ','Ψ','Ω','ί','ό','ώ','ά','ή','έ','€');
$lat = array('a','b','g','d','e','z','i','th','i','k','l','m','n','x','o','p','r','s','t','y','f' ,'x' ,'ps' ,'w','A','B','G','D','E','Z','I','TH','I','K','L','M','N','X','O','P','R','S','T','Y','F' ,'X' ,'Ps' ,'W' ,'i' ,'ο' ,'w', 'a', 'h', 'e', 'euro');
$string = str_replace($cyr, $lat, $string);
// update 440, cyrilic to latin
// $cyr = array('а','б','в','г','д','ѓ','е','ж','з','ѕ','и','ј','к','л','љ','м','н','њ','о','п','р','с','т','ќ','у','ф','х','ц','ч','џ','ш','А','Б','В','Г','Д','Ѓ','Е','Ж','З','Ѕ','И','Ј','К','Л','Љ','М','Н','Њ','О','П','Р','С','Т','Ќ','У','Ф','Х','Ц','Ч','Џ','Ш','€');
// $lat = array('a','b','v','g','d','gj','e','zh','z','dz','i','j','k','l','lj','m','n','nj','o','p','r','s','t','kj','u','f','h','c','ch','dz','sh','A','B','V','G','D','GJ','E','ZH','Z','DZ','I','J','K','L' ,'LJ' ,'M' ,'N' ,'NJ' ,'O' ,'P', 'R', 'S', 'T','KJ','U','F','H','C','CH','DZ','SH','EUR');
// update 450, cyrilic to latin extended
$cyr = array('А','а','Б','б','В','в','Г','г','Ґ','ґ','Д','д','Ђ','ђ','Е','е','Ё','ё','Ж','ж','З','з','З́','з́','И','и','Й','й','Ѝ','ѝ','І','і','Ї','ї','Ј','ј','К','к','Л','л','Љ','љ','М','м','Н','н','Њ','њ','О','о','Ō','ō','П','п','Р','р','С','с','С́','с́','Т','т','Ћ','ћ','Ќ','ќ','У','у','Ӯ','ӯ','Ў','ў','Ф','ф','Х','х','Ц','ц','Ч','ч','Џ','џ','Ш','ш','Щ','щ','Ъ','ъ','Ы','ы','Ь','ь','Э','э','Ю','ю','Я','я','є');
$lat = array('A','a','B','b','V','v','G','g','Gj','gj','D','d','Dz','dz','E','e','Jo','jo','Zh','zh','Z','z','Z','z','I','i','J','j','J','j','J','j','J','j','J','j','K','k','L','l','Lj','lj','M','m','N','n','Nj','nj','O','o','O','o','P','p','R','r','S','s','S','s','T','t','T','t','Kj','kj','U','u','U','u','U','u','F','f','H','h','C','c','Ch','ch','Dzh','dzh','Sh','sh','Shh','shh','','','Y','y','','','Je','je','Ju','ju','Ja','ja','je');
change to
// update 420, greek to latin
$cyr = array('α','β','γ','δ','ε','ζ','η','θ','ι','κ','λ','μ','ν','ξ','ο','п','ρ','σ','τ','υ','φ','χ','ψ','ω','Α','Β','Γ','Δ','Ε','Ζ','Η','Θ','Ι','Κ','Λ','Μ','Ν','Ξ','Ο','Π','Ρ','Σ','Τ','Υ','Φ','Χ','Ψ','Ω','ί','ό','ώ','ά','ή','έ','€');
$lat = array('a','b','g','d','e','z','i','th','i','k','l','m','n','x','o','p','r','s','t','y','f' ,'x' ,'ps' ,'w','A','B','G','D','E','Z','I','TH','I','K','L','M','N','X','O','P','R','S','T','Y','F' ,'X' ,'Ps' ,'W' ,'i' ,'ο' ,'w', 'a', 'h', 'e', 'euro');
$string = str_replace($cyr, $lat, $string);
// update 440, cyrilic to latin
// $cyr = array('а','б','в','г','д','ѓ','е','ж','з','ѕ','и','ј','к','л','љ','м','н','њ','о','п','р','с','т','ќ','у','ф','х','ц','ч','џ','ш','А','Б','В','Г','Д','Ѓ','Е','Ж','З','Ѕ','И','Ј','К','Л','Љ','М','Н','Њ','О','П','Р','С','Т','Ќ','У','Ф','Х','Ц','Ч','Џ','Ш','€');
// $lat = array('a','b','v','g','d','gj','e','zh','z','dz','i','j','k','l','lj','m','n','nj','o','p','r','s','t','kj','u','f','h','c','c','dz','s','A','B','V','G','D','GJ','E','Z','Z','Dz','I','J','K','L' ,'LJ' ,'M' ,'N' ,'NJ' ,'O' ,'P', 'R', 'S', 'T','KJ','U','F','H','C','C','Dz','S','EUR');
// update 450, cyrilic to latin extended
$cyr = array('А','а','Б','б','В','в','Г','г','Ґ','ґ','Д','д','Ђ','ђ','Е','е','Ё','ё','Ж','ж','З','з','З́','з́','И','и','Й','й','Ѝ','ѝ','І','і','Ї','ї','Ј','ј','К','к','Л','л','Љ','љ','М','м','Н','н','Њ','њ','О','о','Ō','ō','П','п','Р','р','С','с','С́','с́','Т','т','Ћ','ћ','Ќ','ќ','У','у','Ӯ','ӯ','Ў','ў','Ф','ф','Х','х','Ц','ц','Ч','ч','Џ','џ','Ш','ш','Щ','щ','Ъ','ъ','Ы','ы','Ь','ь','Э','э','Ю','ю','Я','я','є');
$lat = array('A','a','B','b','V','v','G','g','Gj','gj','D','d','Dj','dj','E','e','Jo','jo','Z','z','Z','z','Z','z','I','i','J','j','J','j','J','j','J','j','J','j','K','k','L','l','Lj','lj','M','m','N','n','Nj','nj','O','o','O','o','P','p','R','r','S','s','S','s','T','t','C','c','Kj','kj','U','u','U','u','U','u','F','f','H','h','C','c','C','c','Dz','dz','S','s','S','s','','','Y','y','','','Je','je','Ju','ju','Ja','ja','je');
And that correct.
If ask you for something, dont tell us check wordpress or any cms, tell us which file , name ....That is support if someone give you 250Euro for your work, dont made full from US. Thank you!!!