You did not mention the problem you are facing. If the payment has been debited from your account but it is not reflecting, give it 24 hours and then retry the payment. But make a note of the transaction details because you will need them for future reference. But if the payment has not been debited and you are not able to initiate the process, delete the cache, browsing history and all those from the settings, restart your system. Try relogging in and make a payment from a different mode.. Also make sure that the registered mobile associated with the bank account has proper signals to receive OTP.