2.1 hasn't fixed it for everyone but my ID3 works perfectly with my Zappi.I guess I'm more worried about the reported issues with VW ID vehicles not playing well with smart chargers. It worked fine last night, so hopefully the 2.1 update fixed the issues.
Have a look on the myenergi forum and they have a version of the app online that makes the controls simple to set off you want to change things every day.
I leave my Zappi in eco+and the boost timer set for the cheap rate time period and adjust the charge % in the car so it stops when the battery is at the % I want.
Once it's set you don't need to adjust anything on the Zappi just the % in the car.