Hi there, @lukaszkot.
I got you covered in turning off the authentication when logging into QuickBooks.
There are times that even if your two-step verification is turned off, you will be asked to verify your identity. It is due to several factors, such as the device, network, or browser you use to sign in to Intuit products. So, if we can't establish high confidence or trust based on these factors, you may be prompted for this to make sure your account is not compromised.
But, if you're sure you're signing in from a trusted device, you could still be asked to verify your identity due to external factors, such as an ad blocker. In this point, either add the *.intuit.com domain to your ad blocker's allow list or disable your ad blocker specifically for the *.intuit.com domain.
For more details about disabling two-step verification, I recommend reading this article: Verify your QuickBooks Online account with multi-factor authentication or two-step verification.
In case you need more account management tips in QuickBooks, you can visit our general resource page to get these details.
As always, feel free to drop by if you have any other concerns. I'll be right here to help you anytime. Have a good one!
