phase wires

Hi i would like to ask for help. 1. PAS issue: my folding e-bike got twist throttle with display , lock and PAS but pedal assist working only on full power from start. Can i change it somehow. I changed it on display but nothing happened. 2. On my 48v controller 250w there are some wires...

I'm hoping someone can help with fitting a new hub to my existing setup. (i.e. without replacing everything) I'm disabled and ride a wheelchair with an add-on powered front wheel that turns it into a trike. (To be recommended, I can now get out with the rest of the family). The 'but' is that I'm...