Hello,

We are glad that we could be of some help 🙂

Just to make things clear, My Account sidebar comes by default from WooCommerce end and the Dashboard Icons on the My Account page comes from Theme Settings. So, as you want to hide the Sidebar from the My Account page, so we removed our earlier applied Custom CSS and now applied the following new Custom CSS on your Site in this regard:

.wd-my-account-sidebar {
	display: none ;
}

.woocommerce-MyAccount-content {
    flex: 1 0 100% ;
    max-width: 100% ;
    width: 100%;
}

This is now the resultant preview: https://snipboard.io/oV23sv.jpg

Best Regards