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,

I believe the issue you're experiencing is due to the VPN setup you're using. How do you confirm that the VPN is working as expected?

Kind regards,
Abhijith

[666]

After I turned on VPN on my computer, I used this query https://whatismyipaddress.com/

Display on US,

then open a hotspot, connect to this hotspot with my phone, and then use my phone to access the website above. The IP address displayed is also US, so I think VPN is normal, so I think Echo connects to this hotspot in US as well