I can't confirm 100% that the valvetronic motor is in perfect working order - but I did perform the following

1) clear all codes and rescan.
2EOF
2DE3 -valvetronic servomotor,activation, volt phase: line disconnection

2) Pulled the VVT connection from valve cover - cleared codes and re-scanned
2EOF
2DE3
2DD6 Valvetronic servomotor, position sensors: Shortcircuit or line break (open circuit)

3) Cleaned both end of the connector ( wiring harness + VVT connector pins) with electrical contact cleaner and re-seated the connection and rescanned
2EOF only.

so its looks like the connection was dirty. Note the 2EOF looks like is common issue and can be cleared after updating DME firmware

After the above - using INPA I ran through the VVT control checks ( 0%, 25%, 50%, 75%, 100% lift position on the cams ) and the requested positions and sensed positions match on each of the above

Following this i cleared all the learned adaptations using INPA. I have yet to do the re-learn but it looks like after this the car starts up fine.

Again - I'm not ruling out that valvetronic may be on its way out - as its a common issue im seeing on other 2011 N55 engines.

This is a pretty detailed video of the VVT replacement fixing the no-start issue on an N55 engine. ( 3 part video series )
https://www.youtube.com/watch?v=5DyCrTElGVs