Hi ! I can see where this is confusing because of the link directly to stripe, but I believe that page is only for stripe payments - meaning, if you scroll down further on the page you'll actually see a table of options for plans. The buttons will either say subscribe or change plan (if you have an existing one).

Selecting one will give the stripe discounted amount indicated under each option.

Payments are processed through two different methods: Braintree - This one would connect and use your paypal account. I beleive this is only for one time purchases, not subscriptions. Link: https://subeta.net/payments.php?

Stripe - This option would require a credit card, but allows for subscriptions with discounts. Do note that if you choose an option that is for multiple months you actually get the full CSC amount all at once, rather than monthly for that period. Link: https://subeta.net/payments.php?act=subscriptions

Hope that makes sense! Let me know if not.