Hi, I am trying to book a reservation. It is 2 ICE and a Nightjet. I can't seem to find how to reservate it. It gives warnings. '’One or more Passes cannot be used for this journey. Please select the travellers with valid Passes for this journey in order to book seats.'’
How can I reservate? Also if I go to the Nightjet website directly it also says it is not possible to book the journey but no information about if it is fully booked or anything. Has anyone als had this before? It is my first time interrail and it feels like a maze.
You would think that the 28th is a bit afther the holidays for everyone so should be fine.. I don't know what to do.

