So I never used the Andersen app other than to lock the A2 when away on holiday, I always set charging schedule on my Model Y screen, that still works fine. I switched the A2 off at the consumer unit when away this weekend to avoid anyone stealing my electricity
Interesting to know what I could do in the event of a hardware failure though. If I had to replace the A2 is it as straightforward as having an electrician remove the A2 unit and replace it with an alternative using the same wiring? My naive head with zero knowledge of such matters tells me it should be that simple.