In order to receive a new OTP, you will need to close and reopen ClientZone. A new OPT will be sent to the primary contact number via SMS and is valid for 15 minutes.
How to resend the One Time Pin (OTP)
Has your contact number changed? Read I can’t receive my One Time Pin (OTP) because my phone number changed article to have your OTP sent to you via email and change your contact number.