This is a demo site for a plugin that makes subscriptions (and selling single products etc.) easy.
The idea in short is that all payments, subscriptions and user reminders, updating payments, deleting customer etc, is made by Stripe. On your site you just connect via API to Stripe and then select what subscriptions or products should give access to what.
For non subscribers
I know, you’re not a subscriber and it is hurtfull, but at least you can read this block, subscribers can’t.