Remove title, breadcrumbs, sidebar and topbar from pages

Hi,
this is my sample site and i have a plugin called wpcustomerarea, and i need to disable for the private files page that i sent, the topbar, the title, the sidebar and the titles.

i already used some of your codes to delete them from single advert page of another plugin, and they were like this:

.single-advert #top-bar-wrap, .single-advert .page-header-title {
    display: none;
}

.single-advert .content-area {
    width: 100% !important;
    border-right-width: 0 !important;
}

.single-advert .page-header {
display: none;
}

.single-advert #top-bar-wrap, .single-advert .entry-title, .single-advert .widget-area.sidebar-primary {
    display: none;
}
.single-advert .content-area {
    width: 100% !important;
    border-right-width: 0 !important;
}

.

i’m going to share some snapshot.

The page I need help with: [log in to see the link]