Hmm that doesn’t look good, looks like settings aren’t read properly from Homey’s storage. It doesn’t show the zones on the Status page, but more importantly, the Delays are undefined.
Are you able to run the app from the Command Line Interface (CLI) like explained here: [HOW TO] CLI install method?
The Heimdall code can be found here: https://github.com/daneedk/com.uc.heimdall