The open-source software that ThingPulse provides for its devices relies on weather data pulled from Weather Underground. The standard setup process involves creating a Wunderground API key (documented in our guides). The usage was free for up to 500 requests per day or 10 requests per minute.
In the evening of May 15th The Weather Company, a subsidiary of IBM, announced that it will no longer provide free weather API keys. There was no prior announcement and the change became effective immediately. It is unclear for how long existing keys will still be valid. As not even the tens of thousand of weather station owners who deliver their data to Wunderground for free will get a key to read their data back the uproar in the community is big.
For our customers this means that unless they already obtained a key from Wunderground they cannot use the ready-made software for the ThingPulse kits. We are very sorry, and furious, about this development but our hands are tied. The promise to our customers is that we will be working hard and not rest until we can offer an adequate alternative integration.
We started working on a new service integration on May 19th. Stay tuned.
Update 2018-06-11
Read the sequel here: Welcome OpenWeatherMap, bye bye Wunderground