Thanks!
I still tried to get it into UTF-8 (as I get somehow feeling it’s better for seo or whatever what else - I may be wrong) but it didn’t work out so I changed MODx to iso-8859-1 and it’s all good now except two elements (
three errors) I just copy/pasted from MODx sample template came with it’s installation:
<base href="[(site_url)]"></base>
and
<a name="search"></a>[!AjaxSearch? ajaxSearch=`1` &AS_landing=`8` &moreResultsPage=`8` &showMoreResults=`1` &addJscript=`0` &extract=`0` &AS_showResults=`0`!]