Can’t run apps through ARC welder on windows or Chrome OS

I’ve been trying to run a couple of apps from apk using the ARC welder extension on an Acer Chromebook. Every time that I get to the main function of the app, it crashes displaying the ‘shockwave crahsed’ image (frowning white puzzle piece on a black background). I went to chrome://settings/content and tried to enable flash for the extension but it says that flash is blocked by another extension. Can anyone help?