Changing order of My Account edit shipping/billing address forms

Not sure if this will have the desired outcome, have you tried https://www.woocommerce.com/products/woocommerce-checkout-field-editor/?

Alternatively, you might have to override the core WooCommerce template files with your own ones. There’s a handy guide to get you started on that available at: https://docs.woocommerce.com/document/template-structure/

Thanks for your reply Riann. The Checkout fields editor allows to change the checkout fields, but as far as I can see it doesn’t work with the forms on My Account pages. I am looking for a function that allows changing the order of the billing/shipping address fields on those pages

Any chance of getting help with this please?

try it:

add_filter( 'woocommerce_default_address_fields', 'change_wc_default_address_fields', 20, 1 );
function change_wc_default_address_fields($fields){
	$tmp=array_shift($fields);      # Удаляет первый элемент массива, возвращая его
 	array_splice($fields,2,0,$tmp); # Вставляет элемент после 2-го элемента, удалив с этой позиции 0 элементов

	return $fields;
}