If you do not want to apply a subscription for a domain, you can cancel it on the Magento backend or on Paypal (https://www.wikihow.com/Cancel-a-PayPal-Subscription#:~:text=When%20you%20sign%20into%20PayPal,recurring%20payment%20on%20that%20screen.)
After clicking on the Cancel button, there will be a pop-up
After clicking on the OK button, the subscription will be canceled successfully.