To be able to update or verify your phone number, you will need to follow the below procedure for guidance.

Click on the Settings section. 


 Enter your number then click on Verify. 

 You will receive an OTP code via SMS. Enter the code and your mobile number will be verified. 

Now that your phone number is activated, you can set up Two-Factor Authentication via SMS if you wish.

Click here for the step-by-step guide