I believe that you have better odds to get ideAlarm working if you upgrade Domoticz using a Beta release.
Newer versions of ideAlarm is using features introduced (and bug corrections) in later versions of dzVents. Using older versions of ideAlarm might work better together with older versions of dzVents but doing that is nothing that I recommend.
I'm using Domoticz Beta version 3.8552 and I am not aware of a single bug in it. Saying that, I should probably emphasize that's the case on my system of course, your system might be different.
For the future though I believe it's better if ideAlarm would have no further requirements than the latest stable versions.