Can't register device

When i try to register my device, i have a message " the server is not reachable, please check your connection". I have 10 herelink and i have the same problem only whit 2 device.
Can you help me?
Thanks

Please check your ip
https://docs.cubepilot.org/user-guides/herelink/herelink-faq#herelink-register-failure

Hi,
thanks for your answer but I still have the same message

I could solve it, I had to share the connection from my phone.
Thanks