Megascan Material(Inst) not showing on my Landscape.

I’ve imported a mountain landscape mesh of my own and put the imported(via Bridge) MegaScan Material(Inst) “Snow Mobile Tracks” material onto it, but the MegaScan Material(Inst) isn’t showing on the landscape mesh.

I tested the snow material by dragging in a box from the “Geometry” tab into my scene and scaled it up so that it was as large as my landscape mesh and dropped the MegaScan snow material(Inst) onto it and it showed up fine and properly scaled to the box, so I’m wondering what could be the problem with my imported landscape mountain mesh?

Could it be something to do with the UV map on my imported mesh? Or maybe a UV channel issue?

Anyone who has had this problem before and can provide a solution I’d be very grateful. Thank you…

PS: I’ve seen other questions like this on this questions forum but nothing that works or is related to the latest versions of Megascan Bridge(Oct 2021) or the latest version of UE4 4.27.