I am using Booster for WooCommerce: Custom Payment Gateways and if I remove shortcode [woocommerce_checkout] and replace it with Checkout Block all my Custom Payment gateways disappear.
After latest WooCommerce update (version:5.6.0) I can’t add new payment gateway to checkout. I can edit existing ones but new one wouldn’t come up on frontend.
If possible you can try to reset this module setting? If still not working then can you directly contact us here? so, we can take a deep look and help you to resolve it.