Thank you for your answer. I did what you wrote in the previous days, I reset the devices as well, but I had the same error in all the devices.
In the meantime What I did:
In the chirpstack_ns database I TRUNKATED the table public.device_activation bit I still have devnonce error and for the devices deleted and added again I see now first in the device Tab object does not exist and again devnonceerror
Maybe now the table trunkated is corrupted, Idon’t know
Thank you again for your support.
I hope to solve this problem, now 3 gayeways up e many devices don’t work at all