If you aren't receiving the SMS code, restart your mobile device and check with your carrier to ensure short-code messages are enabled on your account. If the issue continues, you can request a verification code via your registered email address instead. Just click, I didn't get a text message on the sign-in screen, then choose Email a code.
If none of the above steps work and you no longer have access to the registered phone number, you can update your contact details using the Recover your Intuit Account form.
You can return to this thread if you have follow-up concerns.
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