If you are about to use any subscription apps, there are some eligibility requirements set by Shopify.
“Payment Gateway” is one of the most noticeable limitations set by Shopify. You must be using one of the following gateways as your payment gateway:
Stripe (which is only available to some merchants)
You manage all your store's payment methods in the “Payment Providers” section of Shopify admin.
When choosing a payment provider, consider the countries where your business is located and where your customers live. In this case, you can take a look at Shopify's list of payment gateways by country to find out which payment gateway is available in your country and what currency they support.