This method is called to set the state variable every time the customer selects Other Wallet for payment, as shown here. It indicates the container component that a payment page needs to be rendered with a 15-minute window for accepting payments to the merchant's address. This is done through the PVerification component:

PaymentWait = (mAddress,amount) => {
 
 this.setState({
 paymentf: true,
 amount,
 mAddress 
 })
 
 };

It sets the paymentf flag to true, indicating that a payment is being made by a wallet other than MetaMask and sets the state variable for the amount to be paid in ETH and the merchant address (mAddress) to which the transfer has to be made.