Terrain Hightmaps issue. Help Needed!

I downloaded a hightmap then I uploaded it to images on studio but when I click the box it won’t appear like it should on height maps and won’t let me select it. Weirdly it appears in color maps.
Does anyone know how to fix this, I’ve tried pasting the id in but it won’t let me?

what it looks like


Are you trying to import it or get rid of it?

Are you importing it? or what, try re uploading it.

I’ve imported it via the images in on game explorer