On Windows: so you start adb shell and IN THAT SHELL you run pm ... and the error is about DNS?
What if you run normally adb uninstall com.karin.idTech4Amm ?
Can you get older platform-tools r33 for Windows instead? https://dl.google.com/android/repository/platform-tools_r33.0.3-windows.zip and use adb from this one?