Please check if, in case of
Paypal: Your payment has not been held by paypal. Make sure your payment shows as completed.
CoinPayments: There is atleast 2 confirmations on your payment.
Stripe: Whether your payment was actually charged or declined. Stripe payments do not take more than 5 minutes usually to be processed. If you do not receive an email after that, check the status of your payment in the panel. If it’s not Processing / Completed your payment has been declined.