Paolo The problem is that bunq only deals in euros and Switzerland had Swiss francs. That is why you couldn't use bbunq while in Switzerland.
When you change your address in the app to a Dutch address, you'll be able to use bunq again like you did in Italy, if your account hasn't been suspended by you.
For further details on the precise status of your account, please contact bunq Private Matters, as we don't have any information on your account.
Welcome to The Netherlands by the way! Be advised that in The Netherlands a Maestro card is your card of choice and Apple Pay is not supported yet. Italian cards work on Apple Pay and if it is a Maestro card, you'll be able to use it throughout The Netherlands at almost all shops.