A PayPal echeck is often used during payment if you don’t have a credit/debit card connected to your PayPal account and there are no actual funds in your PayPal account.
It means that PayPal has to first transfer money out of your bank account before the the transaction fully clears into my account. This typically takes around 5-7 business days to fully clear, so if you’ve used PayPal’s echeck service to pay for your download or license you will receive your download as soon as the payment clears, so please be patient.