B3dm model not showing up

Hi all, good day, I need guidance as my b3dm model is not showing up on Cesium Ion

I converted the SKP file to Cesium 3D tiles using FME:
Screenshot (516)

I then upload the whole folder(b3dm + tileset.json) to Cesium as 3D tiles

The coordinate seems to be right, its just that the model isnt showing up.

Source model(SKP file): Tun Mustapha Tower, Kota Kinabalu | 3D Warehouse

Thank you.

I have the same problem with my 3D tile file.