@Jamlam - did you get it fixed in the end as well?
We've had our new ZS EV for a few weeks, and after initially getting 8kWh out of a CCS on its first ever charge have never successfully gotten a CCS charge since, having now tried 5 chargepoints. What struck me is that we also only typically charge from home using the trickle mains-plug charger ('granny charger' ?) overnight. I can't see any reason why that should be a factor, but I can't fail why it wouldn't work either.
Dreading a protracted to-and-fro with dealership, but hoping I can at least point them towards this thread and maybe also the solution
@Andy Poole got through Wickwar.