I successfully send temperature/humidity data from the ESP to Thingspeak. That is through my home WLAN network.
When I tried to show this to my colleagues at work, it didn't work there. Of course I did change the network name and password. The ESP connects to the WLAN, is correctly attributed an IP address and is able to ping an address on the internet. Therefore I guess the connection is fine. However, no data is received at the Thingspeak channel.
I also created a second Thingspeak channel with the same results. It works at home, but not at work.
Any idea what could be going wrong? Is there anything special that has to be cared for on the router? Can the router 'see' that this is not a human user?
Thanks and best regards