There are a few reasons why the security isn't going through your mobile phone, chris214.
You can double-check the following if you're not getting it:
Aside form that, you can log in to your Intuit account to enter your phone number. Here's how:
Once done, click the Verify link to get the code once again.
Let me also share these guide articles in case you might need them in your future tasks:
The Community is always here if you need anything else.
Hello there, Harishp.
I recognize the importance of being able to login into QBO smoothly. Let me guide you through the steps on how to get the code.
As mentioned by my peer, there are few reasons why you’re unable to receive the verification on your phone. Make sure to check the following information before logging in to QBO.
Check out this article for more details: I am not getting a verification code from Intuit on my phone.
I also suggest performing the steps shared by @JenoP so you can log in to your Intuit account. If you continue to get the same result, manage your account and add the country code.
For additional resources, these links provide solutions on how to fix login issues in QBO.
Click the Reply button if you have any clarifications or need help with QuickBooks. I’m more than happy to lend a helping hand. Have a good one.