Sorry for the late reply.
So to conclude, you plug in the ZUS charger, it works fine on charging device and even power up the STSM but the charger itself does not appear on the app?
And the Charger’s LED does either flash?
The charger shall work as it used to even it’s on the new version.
Would you please try “add a smart car charger” first and let me know if it works?