If you’ve lost your phone or changed your number, you can update the number used for SMS authentication when you log in to Stripe Express.

• Go to express.stripe.com and enter the email address for your account

• On the next screen where a 6-digit verification code is requested, select the “I no longer have access to this phone number” option (shown below)

• Follow the subsequent steps to authenticate your request and add a new phone number to the account