IOT_demo ( sensor mode ) not working since 12nd may 2017

[olivier.butler]

Hi,

I have several modules equipped with sensors running the IOT_demo software ( sensor mode ).
It worked for almost 1 year.
This the 12nd may ( about 11:00am HK time ), my modules cannot send datas to the espressif cloud server.
All my modules now are running in a loop seeking the next memorised wif networks.

on a terminal if I'm doing this :
telnet iot.espressif.cn 8000

Trying 115.29.202.58...
telnet: connect to address 115.29.202.58: Connection refused
telnet: Unable to connect to remote host
the connection is refused

if I'm doing this :
telnet iot.espressif.com 8000

Trying 119.9.91.208...
Connected to iot.espressif.com.
Escape character is '^]'.

it seems working

Is there any change between iot.espressif.cn and iot.espressif.com ?
Should I update my firmware ?
Or is it an issue with the cloud server ?

Regards
Olivier

[Bentjudges]

Any firewall changes that may have affected it or maybe win updates?