I have the Marklin version of this model, which I know uses a different protocol however.....
I can suggest 2 possibilities. Firstly are the function outputs on the Lenz switchable between pulseed and latched, i.e can you make mthe function stay 'On', being released by pressing the function button a second time? The functions need to stay on to operate the piezo electric motors for about 10 seconds to raise the platform, and longer to rotate it.
Secondly, I think the Trix has a multi-protocol decoder that reads Selectrix as well as DCC, this may be a problem. The Intellibox/Twin Center can output Selectrix protocol, whereas the Lenz cannot. I wonder if the onboard decoder can be toggled between Selectrix and DCC or whether it auto-detects.
I find my Marklin model a little 'flakey' at times, when I first got it the pantograph did not raise correctly, but after half a dozen resets it is OK, but still needs areset from tie to time. There is a specific function F4 on the Marrklin version to reset the Piezo motors, there should be the equivalent on the Trix version.
Hope this is of some help.