I hade a conversation earlier today about MELCloud and there supported devices.
As I can understand the supported divice is MAC567 and not MAC557. When i try to chose device in MELclouds app I reach my MELCloud account and the app starts to search for devices. The message I get is Timed out after 30000ms. In my MELCloud app in my iPad I reach my devises that are MAC557. If you look at MELCloud app in app store you can se that MAC567 is supported.
I even tryed to start an account at Join GitHub to address my case there, but I did´s succeed. Of that reason I Contact you again.