@ZimmeR;

Hatalı Css Yolu
<!-- bootstrap 5 -->
<link rel="stylesheet" href="https://signal.xn--kriptognlkleri-msbc.com/assets/global/css/lib/bootstrap.min.css">

Doğru Css Yolu
<!-- bootstrap 5 -->
<link rel="stylesheet" href="https://signal.xn--kriptognlkleri-msbc.com/assets/global/css/bootstrap.min.css">