using hdri files for interior rendering backgrounds for products

hi there. I am new to twinmotion and would like to be able to use hdri backgrounds for rendering products. I would like to be able to place my products on the ground plane of hdri interiors but find the walls of the hdri image curve towards the base. clicking on the camera icon levels up the walls but then my design floats above the image ground plane. Are there any tutorials on this anywhere?