Matteo Great news in this regard! bunq has just launched "Purchase Protection and Extended Warranty" for Green Card holders at Update 13 last week, read about it here.
It includes all what you may expect from Mastercard's Purchase Protection and such, as you find on existing creditcards from other banks and financial institutions, a full list of what is included, you can find on the Mastercard website (Dutch).
However, as this a costly option for a bank and Mastercard to include, bunq currently only offers it for Green Card holders, either when subscribing to Green Card on it's own or alongside existing Premium, Pack, Joint or Business accounts at €99,- a year extra + your current subscription level price.
I hope this helps. To read about all the other great features introduced at Update 13 follow this link.