How do i use commands to toggle Simple HMD?

Hi! I’m migrating to UE from unity and encountered an issue - Simple HMD plug-in works fine with my android device, but it gives borders around each eye. I found it somehow related to mirroring mode, like it’s not applying distortion correction. In VR preview everything is ok, but in mobile preview and on the device i get this issue.
Console commands like
Stereo Off
HMD MirrorMode 1 / 2 / 3
Won’t change anyghing.
Editing SimpleHMD.cpp in plugins folder also was useless, even putting there some random 1123123123 won’t affect the work of a plug-in.
Google VR plugin requires minimum 21 API, that’s really bad because i want to support Android 4 devices, also it won’t work in IOS.
So… i’m lost, there’s no info at all how do i toggle this settings and i can’t continue my work because there’s no info if theese issues will be fixed at all in any reasonable time.
Can anyone help?

You want to switch between stereo and mono rendering.

I know a lot of people are asking for that feature, like these to name a few:

Post a reply or up vote the question and hopefully we’ll get this feature.

Actually, the main issue is that Google VR plug-in is not suitable for a lot of tasks at this moment. It can’t do Android4 apps, no IOS apps, that’s why people trying to find a solution in Simple HMD plug-in. I personally get Nival plug-in to work(switched to 4.11.2 engine version), but it’s really sad that such huge chunk of market still almost exclusively belongs to unity.