Floor grid problem


I have upload a model, I can view it in VR mode on my cellphone.
The first time i was able to see the floor grid, and now i cant see it, Cant you help me with this? When i look to my model, in VR setting, I have activated the floor grid.

here is the link to it…

Thanks for your help

Try resetting the scale?
Its hard to tell what you did without actually seeing it

I have reset it the grid is there like before,
can you see the image?