Hi there, @giannibyte.

I want to ensure you'll download and use the QuickBooks Online desktop app for Windows.

To download the app for QuickBooks Online (QBO), you'll need to click on the Download Now button in this link: Easier access to QuickBooks Online. Then, run QuickBooks-Setup.exe to get started.

If you want to add a shortcut or icon to your desktop for your QBO app in the future, check out this article for more information: Create a desktop shortcut for QuickBooks Online.

Keep me posted on how things go once you've tried the steps. I'd be waiting for your response.