You need to do this on their device, but you can go to the App Store, then purchase history and “hide” it. This makes them ask for approval to redownload.

The Dell D6000 actually works pretty well. I have it running two monitors, keyboard, mouse, Ethernet, USB-A microphone, and analog speakers via 3.5mm. Every once in a while I’ll need to reseat the cable if the HDMI-based monitor doesn’t wake up.