Ask HN: What payment gateways are you using for a subscription-based service

I'm building a new platform and need to integrate a professional payment gateway. My primary requirement is seamless access control: the system must automatically grant or revoke user access as their monthly subscription is paid or expires.

I'm curious to know what solutions others have implemented for this. Please drop your recommendations below and share any insights on why your chosen gateway works well for this use case. I'm especially interested in ease of integration and reliability. Thanks, guys!