How can I to creat a AR project?

My steps:
Step 1. I cloned the sample file “Augmented Reality”

Step 2. I import a new 3D model, make new group and attached in one mesh. Scale the Plane001, the angple of spot light, view of camera.
Step 3. I export and replace the “augmented_reality.gltf”
Step 4. I edit the Puzzles



Step 5. Upload AR link

Result: Object cannot be placed on the floor, covered by a clear plane, is “place001”
This file to download to check: link

Thanks Veger3D teams.