External User replaced new phone

Good morning team. I need your support for my peer at email bhall@secretometx.com, he just changed mobile device and can't authenticate. We need you to reset her MFA. he's not able to open himself the ticket as Box is asking to log in and authenticate, and is not possible for him.

He lost his codes for account verification as well. Kindly contact him by email.

I also invited him to Box for file sharing. You can contact me in case you need any additional verification. Thank you in advance.