I can see that you already did everything you could to fix the issue, borges.
Please know that we don't have a support team specific for the QuickBooks Accounting app only. Instead, you can reach out to our QBO support once more for further checking and help.
In addition, feel free to read this article for guidance which apps are supported by Intuit: Apps that work with QuickBooks Online.
I'm still with you if you have any other concerns about QuickBooks Online or the app. I'll respond as soon as possible.
