Pawe? Knapek

First – check your page https://sitecheck.sucuri.net/scanner/

Use FTP to replace theme to default Twenty Eleven by renaming.
eg. rename Challenge to Challenge_old and twentyeleven to Challenge.

Package does not include them. ??

Use FTP do delete wp-admin and wp-includes folder, next uload it from latest wp package.
Replace also all files in wp root directory.

Check again, you probably not use <?php and ?>

you can add redirect 301, but there is no guarantee.

This is probably dynamicali generated.

Check css files via FTP

yes, it works

I don’t see anything …for me it looks OK.

i see it in https://britneyspearswithoutmakeup.com/wp-content/themes/the-bootstrap/css/bootstrap.min.css?ver=2.0.2

sorry…
You can use something like that

<?php
$CaList = get_the_category();
$iss=false;

foreach($CaList as $category) {
 if( $category->term_id != 4 ) { //exclude catid = 1

  if($iss==false) $iss=true; else echo ' <span>/</span> ';
  echo '<a href="'.get_category_link($category->term_id ).'">'.$category->cat_name.'</a>';
 }
}
?>

in header.php file, before 102? line
<?php endif; // end check for removed header image ?>
put something like that
<div id="mybanner">your banner code</div>
and in your css file

#mybanner { width:500px; height:60px; position:absolute; bottom:20px; right:20px; z-index:999; }

add to your style eg.
#site-title a { color: #000 !important; }

file bootstrap.min.css
line 92, change
.page-header{padding-bottom:17px;margin:18px 0;border-bottom:1px solid #eeeeee;}
to
.page-header{padding-bottom:17px;margin:18px 0;}

you should add this to your style.css file (themes/sat_voices/style.css)