Sorry to hear you are having issues. I believe that tag will be gone by itself after few days installed. Or, you can try disable setting "Show recently added apps" in Start menu -> configuration -> Advance options.
Stardock Community Assistant.
I already have this option turned off.
As I said above, usually you should be able to either open, or right click, on an app and the "new" tag should be gone.
I have confirmed, through testing, that this has only started happening since installing Start11v2
I will give it a few days more to see if it goes away by itself, I will update this thread either way.