Device Ownership for MDM app

I am developing a MDM app where I need take device ownership for making features of MDM app. That's why I am trying to get device ownership via adb commands just after reset my device but it shows me I have some other accounts on the device while with help of same process I am able to get device ownership on the PICO and other devices. 

So I want a solution how can I get device ownership in meta oculus devices.
I think MetaStoreHelp will help me on this.