Hello there, Susan.
I've noticed that you've posted the same concern twice in this forum. Don't worry, my colleague has already provided a solution for bypassing the code and information about Multi-Factor Authentication (MFA), and why it requires a code every time you log in. Please feel free to visit this link: https://quickbooks.intuit.com/learn-support/en-us/account-management/re-login/01/1481423#M86019
For future reference, you can check these articles to help you update or change your email address, user ID, password, and other information for your QuickBooks: Update or change Intuit Account sign-in information.
I'll always be here, ready to back you up if you have further concerns about MFA every time you log in to QBO. Please let us know any time in the thread, Susan.
