Jenson replaced the brakes with sram codes according to the OP the rear pipe shares a port in the chainstay and the mainframe with the speed sensor wire, chances are the "mechanic" that fitted the brakes did a very ham fisted job of pulling the pipe through resulting in the kinked wires.
I can't see that happening, if users have the ability to swap the motor settings between 27.5 and 29 wheels its going to be extremely easy for people to set the bike to 27 and gain extra assist speed from using a 29 wheel. granted it will only be a small gain but its still above the legal limit...
Thats a little concerning but not unexpected if the motor turns as slow as they say, my rise with the same size battery and a far more powerful motor can comfortably do around 15 miles and 3500ft vertical all in maxxed out boost.
Or the retailer is trying to rip him off, i've had a customer bring in a bosch battery warranty on a bike bought from tredz as it had been sat with them for 10 weeks with no joy.
Turns out bosh had sent them a replacement battery 8 weeks earlier but they told the customer that the warranty had...