Whop

You put your paid content or group behind one link, and Whop handles the payment, lets buyers in, and takes their access away when they stop paying.

Whop is an American platform for selling digital products and paid communities. Everything on it is built around selling access — to a Discord or Telegram group, to a course, to a set of files — rather than shipping something. It is also a marketplace: buyers browse Whop itself looking for things to buy. Setting yourself up as a seller costs nothing up front.