Hi there, sbasile.
Thanks for brining your question forward here in the Community. I'm happy to provide some info about the QuickBooks Online Desktop App.
The link above stating the app has been decommissioned is for Canadian QuickBooks Online users. The U.S. version is still active and you should be able to download and use it without issue.
Please don't hesitate to reach back out if you have any other questions. I'll be here to lend a hand.
