I keep having to get a code sent to my phone to log in, this just started

Thanks for bringing your concern to us, @MichelleLucarelli. I can explain how to resolve sign-in challenges in QuickBooks Online.

This function was created for keeping your account safe while you are inactive for an hour. This means that if you haven't done any transactions in the last 1–2 hours, you'll be immediately logged out.

We can also establish or change the hours when you need to stay in your account for a while.

Here's how:

1. Go to the Gear icon and select Advanced tab.
2.  Scroll down to the Other Preferences.
3. Then, click Sign me if inactive option, choose the signing in hours. 
4. Hit Done and Save.

If the issue persists, I suggest you performing a basic troubleshooting and clear cache to quickly fix the issue in QuickBooks Online. Check out this article provided below:

• Troubleshooting browser problems.
• Clear cache and cookies to fix issues when using QuickBooks Online.
   

We'd like to hear your thoughts on the subject. Please tell us in the comments section.