All the sites are pinging successfully from the router. It does not seem to be connection to server issue. It looks like something is going wrong during the registration. Do you need the lamp serial no?
I am surprised because both the ceiling lamps delivered to me are showing the same problem. Thanks @dingyichen
Which country do you live? Could you have a try with other server?
If you still have the issue with the server nearest to you, you can have a try with:
1 Setup a hotspot with another phone and connect the lamp to it to see if it works.
2 If yes, try changing DNS of your router to 188.8.131.52.
3 Reset your lamp, connect again.
I’m in Israel, tried connecting to all servers, same issue.
The lamp connected to my WIFI correctly, I can ping it, so hotstop via another phone does not suppose to solve it.
I can ping all your servers except Singapure, which might be just blocked for pings, traceroute reach it.
What is DNS 184.108.40.206, how will I surf the web with such DNS ?