[werk_ag]

Seems there is a problem with the ThingSpeak link on the post above.
It is supposed to be a public channel, but seems it isn't work that way...

Update:

Its a ThingSpeak issue.
Here is their answer:

Thanks for the heads up. We're working on a fix.
Members of the public can actually view the public channel if they first visit https://thingspeak.com before clicking the link to the public channel.

So first click here: https://thingspeak.com

and then to see the public channel, clique here: https://thingspeak.com/channels/317451