Hey, I’m going inter railing for the first time this summer and seat reservations are becoming so confusing. I’m having 2 issues at the moment. I booked a train between Paris and Lyon and when trying to book reservations I can't find the specific train I booked but I need to buy a seat reservation why would this train not exist anymore? secondly I have another train booked between Lyon and nice, I can buy a seat reservation for one part of the journey but not the other and I can't buy it for any of the trains that day. is there still a way I can book this reservation not on the website as it won't let me or will I have to change my route,
thanks in advance