Sidewalk device registration failed

[666]

When the situation shown in the above figure occurs, I want to test the functionality of Sidewalk. Is there any simplest way to test it? Currently, only nrf52840dk is available

[Menon]

Hello,

In this case, I recommend you test the VPN once again because, from what I could see, I believe the Nordic side is okay. Try testing the same using a router with VPN and see if the same is happening.

The next thing to consider would be if the mfg.hex data used during the provisioning is valid.

Kind Regards,

Abhijith