Looks like this particular event is occurring because another app is messing with the devices and this app wants exclusive control.
If you go into the app code open the app and comment out line 520 by putting // at the beginning of the line it will get rid of the log entries you posted.
// log.info "dimmers are off and managed by another app, $app.label will resume when they're turned back on keepDimmersOff = $keepDimmersOff"