Hello,

1) Please try adding the following Custom CSS in the Global Custom CSS area under Theme Settings >> Custom CSS.

.woocommerce-ordering {
    display: none;
}

2) Please disable the maintenance mode to check it myself and help you out accordingly.

3) Please try adding the following Custom CSS in the Global Custom CSS area under Theme Settings >> Custom CSS.

.variations_form.variation-swatch-selected .reset_variations {
    display: none !important;
}

4) Please try adding the following Custom CSS in the Global Custom CSS area under Theme Settings >> Custom CSS.

.related-and-upsells .slider-title:before {
display: none;
}

Best Regards