Paypal has strict security standards when it comes to accepting payments. Whenever Paypal detects a suspicious transaction it will put the transaction on hold to perform a security check.
This is a process that we cannot control as Paypal does this automatically.
If the payment is cleared, our system will automatically accept the payment and add the plan to your account.
If the payment is rejected the amount will automatically be refunded to your account.
This process may take up to 72 hours. If you require further assistance please contact Paypal support.