OTAA ok, 12h later I get denied, reboot gateway --> OK again ...!?

[arjanvanb (Arjan)]

@lukas

ABP isn’t really working for me: once I disconnect my node from power, I have to regenerate the personalized device/keys. Maybe thats how it should be though.

Yes, very much by design:

[…] you should realize that these frame counters reset to 0 every time the device restarts (when you flash the firmware or when you unplug it). As a result, The Things Network will block all messages from the device until the FCntUp becomes higher than the previous FCntUp. Therefore, you should re-register your device in the backend every time you reset it.

So, when using ABP for production, you should save the counters in non-volatile memory. For insecure debugging, one can disable the check.