[Dippy]

CVT doesn't have gears, it has a band/chain between two variable diameter pulleys. This allows the engine to operate at optimal revs regardless of vehicle speed.
Multitronic simulates gears just to make drivers feel happier (it kind of defeats the whole purpose of a CVT).

It will have two multiplate clutches, one for forward and one for reverse. I'm no expert but based on the fault code I suggest that the forward clutch is worn enough that the TCU has adapted to increase pressure to its limit so can do no more. Likely it needs a new clutch.

 

[Dippy]

Dippy- sounds logical what your saying but now both drive and reverse are non operational.

Auto trans have confirmed its either a snapped chain or broken drum inside the box

I suggested the clutch purely because your first post made it clear that reverse was OK. However either way the box needs to be opened up to fix it.