Nonresponsive Nitrokey 3A NFC

Hi, Community,

I am having troubles with my Nitrokey 3A NFC. Most of the time, when I insert it in a USB port it is not getting detected by the device. By that I mean it is not being detected at all. Not even as an unknown device. It is like it is not there at all.
I have tried with all ports on my PC even with a USB Hub. It is acting the same way when I try to insert it into another computer (Windows 11 and Fedora 41). I cannot find a pattern or a reason for it not starting. It remains unresponsive roughly 5 out of 6 times.
Furthermore, it not just a matter of inserting and removing it. I can try to reinsert it like 10 times and it will not start. Then a few hours later it could start from the very first try.
Sometimes it is also getting disconnected at some random time after insertion. I simply do something totally unrelated and I hear the sound of disconnecting USB (my main machine is running Windows).

NFC doesn’t seem to work at all (I have tried it just once though). I tried registering it with Google account on my android phone but it was never discovered.

Have anyone experienced something similar? If not do you have an idea how I can troubleshoot.

Thank you in advance.

Hello, please contact shop@nitrokey.com with your order number and this description.