750wh

Ok so today my Cube arrived, and it`s not even working from begining :) I`ve tried to do some ride with assist but speed is not showing and motor is working uneven, looks like magnet issue I`ve got 523001 error , do you know is there a quick fix or I need to go to LBS ? And the second issue is...

Hey everyone,i need your help on this one.After i cleaned my bike and as i inspected it for dirt i came up to this image.The bike has around 350Km and it doesn't seem like the usual wear and tear.What do you think ?