Hi! We're all here to help each other's. And wow, impressive age !
As I see it can be either of two things: app not subscribed for Tripwire or Tripwire not being triggered.
The first I would check if you have subscribed to the IVS events on IDMSS.
This is how to do it on the Android version GDMSS (similar on IOS).
Go to messages, Alarm Subscription (Bell and Plus icon in top left corner), click AI Analysis and then Tripwire, choose channel and save.
You would have done this for Motion detection as well I guess.
If you've done this already i would make sure your camera/NVR actually triggers by the tripwire.
Go to the NVR and playback and you can filter out the events and only look for intelligent (IVS), motion etc.
The iDMSS app is not perfect to monitor events, personally I use the GDMSS app instead.
Good luck!