Downloaded the App on my Adroid just now. When I click on the top-left hand corner where the menu is the options “flicker” for a very short while and then disappear. So, I can’t define any triggers. Wonder what is going on?
Could be a bug, perhaps device-specific. What kind of Android phone (make, model, Android version) do you use?
In the meantime, you can always define your triggers on hamalert.org and use the app for displaying alerts only.