If you can't log in to Payhawk because the two-factor authentication code is sent to a phone number you no longer use, a Payhawk Administrator at your company must request the change on your behalf, for security reasons.
To update the old phone number so you can log in, a Payhawk Administrator at your company must send the request on your behalf:
Ask a Payhawk Administrator to send an email from their registered Payhawk email address to support@payhawk.com.
In the email, the Administrator must include your name, your old phone number, and your new phone number, with the full country code, for example, +44 for the UK.
Once Payhawk updates the phone number, the verification code is sent to your new phone number so you can log in.
Once you log in again, you can update your phone number yourself from the Payhawk Mobile App, so the number stays updated for future logins.