@Augustin, The issue should have been fixed regarding the program preview. The sunrise/sunset times were being incorrectly calculated by the Javascript library and comparing them to the controller’s sun rise/set was causing most of the issues you were seeing. The issue has been pushed to the code here: https://github.com/OpenSprinkler/OpenSprinkler-App/commit/f10431d22d3e2911f114e45cb1b456abb759aafe and will be released in the next app update.
The code has been pushed to the beta server and if you are interested a small post has been written on switching back and forth between beta, here: https://opensprinkler.com/forums/topic/mobile-app-ui-beta-access/
Thanks!