Once you log into your account, click on the "More" tab at the bottom right of your screen.
Then you will want to click "Personal Info".
On the Personal Info page, you will want to click "Phone Number" to add the number for receiving SMS OTP.
Follow the guidance to verify your phone number.
*For the region exposed to massive hacking activities like "sim swap attack", the sim card might be highly vulnerable and the number might be invalid to verify.
If you need further assistance, please click here to submit a request.