Sorry all for today! There was some very obscure bug that made the app work perfectly on newer Homeys, but on older Homeys crashed terribly. For the ones interested it had to do with incompatibility of a public npm package with older node version that is running on most Homeys.
But all looks good now (luckily). And will hopefully soon come with a newer version that has again even more support for more cities. But it almost became a day job to maintain the Homey apps so also have to make some priority decisions 
