Classic Cart and Checkout For WooCommerce
This article belongs to our plugin : WooCommerce Easy Checkout Field Editor
WooCommerce recent update 8.3.0 makes gutenberg block based checkout page as default checkout page on new installation.
* Enhancement - Cart and Checkout Blocks are now the default checkout experience on WooCommerce [#40867](https://github.com/woocommerce/woocommerce/pull/40867)
source :- https://github.com/woocommerce/woocommerce/blob/trunk/changelog.txt
This block do not yet recognize existing hooks related to checkout fields. If you already have checkout page with old shortcode woocommerce_checkout you won’t be affected. For new fresh installations create new checkout page with shortcode woocommerce_checkout and set it as a default checkout page under woocommerce/settings/advanced tab.
It will restore old woocommerce checkout page.
Alternatively you can download plugin and activate which will do the job for you.