Hi,
Make sure the credentials you’ve shared are the correct ones?

However, you can also add the following code in the customizer > Custom CSS. It’ll do the trick

@media (max-width: 991px) and (min-width: 576px){
    main#main{
        padding-top: 75px;
    }
}

@media (max-width: 575px){
    main#main{
        padding-top: 100px;
    }
}

Thanks