Setting up PayPal
To link PayPal with your Battle.net account, you must first set up Mobile Alerts. First, log into your Battle.net Account Management page. Navigate to Security Options and click Mobile Alerts. You will then be walked through the setup process.
Once you’ve got Mobile Alerts set up, select Settings, select My Payment Options, then click Add Payment Method. Select PayPal from the dropdown menu, then click Continue to PayPal. You’ll be redirected to PayPal’s login page. You may log in to an existing PayPal account or create a new PayPal account.
On the Add Payment Method screen, select PayPal from the Payment Type dropdown.
The page will redirect to PayPal's login screen. Log in to PayPal and follow the prompts to complete the process.
After confirming that you'd like to link your PayPal account to Battle.net, you'll see the message below:
If you'd like, click Make this my primary payment method to use PayPal as your payment method of choice for future purchases. It is possible to change your primary payment method at any time.
Making a purchase with PayPal
Please note, at this time PayPal may not be used for Blizzard Store purchases or subscription payments on EU accounts.
First, select the game you'd like to purchase using PayPal.
Select Continue.
On the Purchasing page, select PayPal as your method of payment and accept the Terms of Sale, then click Continue. Once the purchase is confirmed, you can download and install the game as usual.
Note: If you have selected the wrong item, it is possible to change the order by selecting the "Edit Order" option just below the order summary.