If you are trying to approve or reject an order and you do not receive an Authentication Code, please ensure that
You have network coverage in your area
Your mobile number on your profile is correct and verified, you can confirm that under User Information
Sometimes, there could be network delays and you may not receive the Authentication Code immediately. In that case, click Resend Code to generate a new Authentication Code for you. Once you get the new Authentication Code, you will be able to approve or reject a payment order. The Authentication Code is valid for 5 minutes.
You might be interested in the following questions
How do I know that I have a payment order pending for my approval?
Why do I need an Authentication Code or Approver Code to approve/reject a payment order?
Can I approve a payment order without an Authentication Code or Approver Code?
What is the difference between Authentication Code and Approver Code?
How can I get an Authentication Code to approve or reject a payment order?
How can I get an Approver Code to approve or reject a payment order?
How can I approve orders if I am unable to verify my mobile number?
I received multiple Authentication Codes, which one should I use to approve or reject an order?
I am getting an error that my Authentication Code is not valid or has expired?