We're so sorry you are facing this issue, but we're here to assist.
When you press "Login" on your BigPay app, you will need to put in your phone number. After receiving the Login Link and clicking on it, you will then be prompted to put in your passcode. Here, you can tap on the 'FORGOT?' in the passcode screen:
You may reset your passcode by answering 2 verification questions.
For a better experience in completing a passcode reset, kindly make sure your app version is up to date, and your login phone number is your registered number with BigPay.
If you are unable to reset the passcode, please do chat with our live agents and we will further assist to reset your passcode on our end for the next step. 😊