Thanks a lot for all the answers. The contacts and threads I had already cleaned before my post, they are all clean.
@TheSwain, thanks for your detailed description. But I dare not.
Because.
1. I have the paranormal only 6 days and so would lose the warranty.
2. I can not solder.
I think it will be best to complain the paranormal. Unfortunately ordered at Fasttech and I live in Germany ... Maybe directly to Evolv?