I bought 2 One Country Passes for France for my girlfriend and I. In the Rail Planner app I could activate the pass for our journey from Lausanne (CH) to Bordeaux (FR) meaning it is valid for this route (1. screenshot). However, when I try to book our (mandatory!) seat reservations on the interrail website, it says that our passes are somehow not valid on the first train but only on the second (2. screenshot)
This is really frustraiting and I really hope that someone can help me out.