Buttons not working on click for VR game

Hello everyone

I know that a lot of topics have been opened on this, but I didn't find any solution to my issue specifically. This might as well be due to the fact that I am a newbie at this so I might have missed something fairly simple.

In short, if I run my game on the device, I can click buttons, but from the Editor my mouse click just doesn't work

Whatever help would be greatly appreciated!