The eBay money-back guarantee covers TANGIBLE items up to 30 days after delivery (SNAD) or expected delivery date (INR). Subscriptions are NOT TANGIBLE. They cannot be "returned" for a refund.
Paypal's allows complaints up to 6 months but services may not be covered at all. I suggest you contact Paypal and/or read the UA.
~~C~~
My Glass Duchess Quoting Mom: In polite society, "hey" is for horses.