If you have paid by PayPal, it may have been labelled as an eCheque/eCheck (which comes with a delay to clear payment).

As PayPal is the payment processor, Kdpcover does not have control over this.

If this occurs, we will wait until the payment has cleared before starting unless otherwise discussed.

Please see this PayPal support article for more details: https://www.paypal.com/us/smarthelp/article/why-is-my-echeque-pending-(buyer)-faq3270