Custom terrain not working

I have made custom PBR terrain on roblox studio and it works great there but as soon as i load into my game through the roblox site the terrain just turns into 2 white blobs with no texture is there any way to fix this.

Turn on Part Colour in Properties of the part.

On what part the problem is with the terrain.

Have you used a plug-in? When creating the terrain

It’s an issue at the moment that hasn’t been fixed. Sometimes textures take really long to load, and sometimes they don’t load at all, causing other issues such as slowdowns or preventing other instances to load such as Meshes, Parts, and even the Skybox.

Your best bet is to fill out a bug report and hope Roblox takes care of this issue.