PayPal Automatic Payments Subscriptions are set when paying an Invoice.
Setting up an automatic PayPal subscription

When paying an invoice, you need to click on the "PayPal Subscribe" button in order to set up an automatic payment subscription.
Kindly Note for "PayPal Subscribe" it appears in the following conditions only:
- When you are paying an invoice for a recurring service (VPS or any services which are recurring).
- The Invoice is NOT already due. If the invoice is already due future payments would be late each time.
Cancelling an automatic PayPal subscription
Services Providers cannot cancel PayPal subscriptions. You will need to cancel the subscription from your PayPal account. In order to do this log in to your PayPal account:
- Click Profile near the top of the page.
- Click My money.
- Click Update in the My preapproved payments section.
- Click Cancel or Cancel automatic billing and follow the instructions.
You can read more in this PayPal article.
Changing the subscription amount or cycle
If the VPS billing cycle amount changes (due to upgrading/downgrading your VPS hosting account) or your payment cycle (monthly, quarterly, semi-annually, annually) changes you will have to cancel the subscription from your PayPal account and set up a new one on the next issues invoice. Both actions are described in detail above.