NXTPAPER A1 Official Office/Outlook App

Is there a way of getting the OFFICIAL Microsoft office app on the A1? The one that comes with the device isn't the official one (version and signature do not match) and most importantly doesn't supports Intune device management which means it's utterly useless for any real productivity since it would never be able to connect to anything other than outlook.com which is basically Hotmail.

I know this is a Chinese device, but come on, I didn't expect the most basic productivity features to not work on it.