Help with payment method

If you want to use what came with the theme you will need to contact the theme developer. If you want to use WooCommerce, then the payment plugin with the theme is probably not going to work for you and you will need to look at WooCommerce payment add-ons, you can do so here: https://woocommerce.com/product-category/woocommerce-extensions/payment-gateways/. It definitely sounds like you are using a premium theme though and as the theme developer knows we do not support premium themes here on WP.org. Unfortunately, with the information provided it will be hard for us to provide further support here on WP.org. For WooCommerce related support your best bet is going to be to go here: https://wordpress.org/support/plugin/woocommerce/ or here: https://woocommerce.com/contact-us/

Hopefully this helps get you headed in the right direction. Once you find a solution please tag the thread as resolved for us.