Save as Type Datasmith not working

Hi everybody, I’m having a problem with datasmith and 3dsmax.

When I try to export a 3ds max file, I can’t save the project in datasmith file. It simply doesn’t appear the option. I have installed datasmith for my 3ds max version (2020) various time and restarted the program but simply it doesn´t work…

Any idea how to sort this out?

Export to datasmith is in the datasmith tab in the ribbon.