In the model there is a ball with materials for the second version of the sofa.
If possible, the TurboSmooth modifier is left in the 3Ds Max 2013 file.
Export files without using TurboSmooth.
https://www.flexform.it/en/outdoor/products/sofas-sectional-sofa-ottomans/vulcano 

Name: Vulcano_Flexform_Outdoor_Sofa_3
Version: 2013
Preview: Yes
Units: Millimeters
Dimension: 2831.58 x 1008.38 x H.740
Polys: 322 439 (without TurboSmooth)
XForm: Yes
Box Trick: Yes
Model Parts: 28
Render: Corona
Formats: 3Ds Max 2013, OBJ, FBX