The plugin supports all the payment methods implemented as required by WooCommerce.
You can set all the payment methods available in the list in WooCommerce -> Settings -> Checkout with the payment rules configured with the plugin.
Yes, the plugin provides this possibility. You can apply an unlimited number of rules to the same payment method: the final cart total will be given by the amount of the discounts and /or decreases configured for the rules.
For further information, click here .