I want to make a reservation for some connections (specifically TGV in France) in about a month for myself and some friends. However I seem to be unable to do so.
I can make a reservation for only myself, but as soon as more than one person is part of the trip it shows “NOT AVAILABLE” for every single connection (even though before it said that there are still many seats available). This is the case both for reservations for TGVs in France as well as high speed trains in Italy (which I tried as a test).
Does anyone know what the problem is or - even better - how to circumvent this?