Salut, I use the pot mainly for baking bread, but it's not really necessary. The pot is made of ceramic but sealed and not open-pored like a Roman pot, for example. Accordingly, you don't have to water it. Otherwise, I think you should wash it by hand and not in the machine, but there's no way around that with this size. Otherwise, I have only had great experiences with the pot.

a) 32.5 cm, b) 20 cm

Certainly big enough for 2, actually 4ppl i would say. No, the manual didnt mention any treatement necesdary before first use. Enjoy

Yes, the induction plate is only needed if you want to use it on an induction hob

Regrettably not suitable for induction cookers.