I live in Italy and I bought a Wisper 905Se from German.
I bought it about 2 months ago, but used it only the last 2 weeks, I have been abroad for work.
I had the same problem with my 905 SE, but I have only pedal assist, no throttle or the 2 buttons red and green, because they were no assembled, and I received no instructions how to assemble them.
Anyway the pedal assist is enough for me, the only problem is that the 905Se tries to run at 25 Km/h anyway, so if there is a hill I must work a lot, or it "dies" after a short way.
Today the 905Se died at all, no led, no lights at all in the "dashboard", I was going on a mountain road, that I usually do with my normal (not electric ) bicycle and it stopped without notice.
I was quite disappointed, I checked the fuse and it was ok, after some times it started again but I could not come home, down the hill.... now I am trying to charge the battery, but anyway I though the e-bike should climb a hill that I usually climb with my city-bike.
The bike is new, there is warranty, I hope it is a defect of my bike and not a limit of the 905Se.
Sorry for my English, as I told I am from Italy, and I stopped with school a lot of years ago, i think I should need a few lessons again
