Paypal subscriptions are a great way to set up recurring payments without a credit card. But they can get tricky if you don't know exactly how they work.
While you use one of our invoices to create the subscription, our system is separate from paypal's. We do not "charge" your paypal account so to speak. A subscription means you are telling your paypal account to send us money every pay period. If you ever downgrade/upgrade or cancel your account with US, you will still need to cancel your paypal subscription. Otherwise, it will continue to send us payments. It's not possible to edit subscriptions. If you need to change the dollar amount of your payment, you need to cancel the first subscription and create a new one for the correct amount.
Also, make sure you start the subscription early enough to make timely payments. Subscriptions start paying the day of the month AFTER you start them. For example, if you started a monthly subscription on September 4th, it would make a payment Sept 4th, Oct 5th, Nov 5th, Dec 5th and so on. So you'll want to start the subscription soon after the invoice generates so your payments are not constantly late.