The only part I can access online is for my account information. I even uninstalled the desktop app twice then reinstalled it using the latest copy on my account page.
I have tried repeatedly to access that data online to manually delete it only that website has been down for several days. It removed the 2019 from the 2020 data file, but as soon as I did an updated Cloud sync it put all that old 2019 data back into my current file. The last three days I can't access it which I needed to do to delete old 2019 data that should have been deleted when I chose not to include it in my 2020 data after doing a Year End backup. One problem I have had is the cloud service connected to the desktop app always seems to be down.