PayPal is available in all POWr Plugins that handle payments. Stripe is currently available in eCommerce only. No other electronic payment methods are currently integrated. More details can be found here.
Yes! You can offer subscriptions in all Plugins where payments are available as a feature. When offering subscriptions via PayPal, you must have a PayPal Business, Merchant, or Premier account to handle recurring payments. You can find more details about setting up subscriptions in POWr eCommerce here.
Yes, this feature is available as a Premium feature in Form Builder, eCommerce and PayPal Button. More details about setting up discount codes here.
Yes, you can offer donations with PayPal Buttons and Form Builder.