After a recent software "upgrade" (I think it was 8.0) the car will now only show you the maximum the car can draw from that location.
I have found my car will only show 24 amps maximum by default. Once I plug in into a 1 phase charger it will jump up to 32 amps. I don't particularly like this design, and suspect it means I wouldn't be able to limit the charge to 24 amps before plugging it in (not that I can think of why I would want to, but I would be happier knowing I could if I needed to).