Can someone clarify how pricing 4 subscription works?

Oh, one more thing, while checking out it says
Additional Required Information
This product/service requires some additional information from you to allow us to process your order.
but never specifies what additional information I am supposed to give.

Towards the end it says:
Total Recurring: €77,88EUR Annually
but I'm not interested in anything recurring, is that optional?
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!