@ppieczul, thanks for the last update (4). I have tested this solution since the last 8 days and it works perfectly.
The power off-started trigger is also worth it.
Ok, I was wrongly assuming that is possible to uninstall the binding plugin coming with the official version and just manually install the new plugin.
If this is not the case, I will wait for the new official version in order to not impact all the other configured items and plugins.
Thank you!
I did it exactly this way. With some exceptions (see thread history above, my posts), it worked well and I was able to test it.
You have to download the current snapshot jar of this harmony binding. You can find the links here in the thread history (for example the latest, posted by @ppieczul here Harmony Binding 2.3.0 Snapshot-4).
Then copy this jar file into the config folder “addons” of your openHAB runtime.
IMPORTANT: Be sure to uninstall any other versions of the harmony binding (e.g. via paper UI).