beautifull design - poor implementation

I have just unpacked the keyboard, once tried and unfortunately re-wrapped.
The design is really very well done and compact. The blue glow beautifully.
BUT
The seller did not specify that it is not a German keyboard. The delivery contains numerous colorful changing keys, which unfortunately does not include the missing German buttons. When trying out the keys, I realized that on the one hand are noisy, have a good pressure point - but the J-key except for the blue lights not working. The lights of the keyboard is very light, which does not interfere with natural light, but in the evening or at night will be too bright. Whether it is possible to decrease the brightness, I do not know, was not intuitively recognize and a user manual was not there (no English).

Conclusion: the company must still working on the technical implementation and the sales strategy.