RevGenetics review for Propel Subscriptions App

The app says that it integrates with Stripe subscriptions, Paypal subscriptions, Appstle subscriptions, Recharge subscriptions, Seal subscriptions, Shoppay subscriptions... But as soon as I install the app, it doesn't allow me to use paypal subscriptions. To use subscriptions, you must be using one of the following gateways as your payment gateway: Shopify Payments, PayPal Express, Authorize.net, Stripe. We do have PayPal Payflow Pro in shopify, but this app seems to be blind to it.