Hello,

1) Please check how it works with the default WordPress theme just to check whether the issue is with our theme or not.

2) Sorry but there is no option in Theme Settings available for that. It requires customizations and this is beyond our limitations and support policy.

3) Please try adding the following Custom CSS under Theme Settings >> Custom CSS for that.

For desktop try adding in the Custom CSS for Desktop, For mobile try adding in the Custom CSS for Mobile, For Tablet add in the Custom CSS for Tablet.

.title-size-default {
    padding: 150px 0;
}

3B) Title text is already hidden as you can see in the screenshot: https://gyazo.com/226d29e7132a2b41dff0720c955f8d60

4) For the wishlist and My account page try using the following CSS.

For desktop try adding in the Custom CSS for Desktop, For mobile try adding in the Custom CSS for Mobile, For Tablet add in the Custom CSS for Tablet.

.title-size-default {
    padding: 150px 0;
}

For the Cart, page try using the following CSS.

For desktop try adding in the Custom CSS for Desktop, For mobile try adding in the Custom CSS for Mobile, For Tablet add in the Custom CSS for Tablet.

.woocommerce-cart .page-title {
    padding: 80px 0;
}

For the Checkout page try using the following CSS.

For desktop try adding in the Custom CSS for Desktop, For mobile try adding in the Custom CSS for Mobile, For Tablet add in the Custom CSS for Tablet.

.woocommerce-checkout .page-title {
    padding: 80px 0;
}

4B) The page title is already hidden for all pages.

5) Sorry but there is no option in Theme Settings available for that. It requires customizations and this is beyond our limitations and support policy.

Best Regards