1.When you design in 3dmax or skethup, please set a default materials on the target to be replaced which can be a random photo. The specific operation as below:

2.Save the version of SKP as version 2015 or earlier version.

3.Using AiHouse Assistant to upload models on AiHouse Platform. 

4.Drag the model in design area as below:

5.Drag the texture/material to be replaced that the final effect as below: