1. Open the CSP management portal and log in to your CSP account.
2. Click the Subscriptions tab, and then click Add Subscription.
3. On the subscription page, select the product you want to buy and the subscription type.
4. In the "Payment Method" drop-down menu, select the "PayPal" option.
5. Enter your PayPal account information, and then click the "Continue" button.
6. Confirm your order information and click the "Submit Order" button.
After completing the above steps, your CSP package will be paid by PayPal. Please note that you need to ensure that your PayPal account has sufficient balance or is tied to your bank account or credit card, so that CSP can successfully deduct money.