To verify your phone number for two-factor authentication via SMS simply

• Login to https://dash.kot4x.com/
• Click "Settings"
  
• Enter your phone number including country code
• Click "Update and Verify" 

 You will now get a text message to that phone number with a 6 digit code.

To complete the process, please enter the code and click "Verify" or if you did not get the code you can resend the code every 20 seconds.