You can make seat reservations through the DiscoverEU Travel app in the Eurail online booking tool.
When looking up a train connection in the 'Planner' section of the app, you will see a button, 'book your reservations'. By clicking this, you will be redirected to Eurail's online booking system. Here, you can make your seat reservations.
You can also access the Eurail's booking system via the ‘More’ section of the app, by tapping ‘Seat Reservations’. Search for the country and tap ‘Book with Eurail/Interrail’ to book through the Eurail online booking tool.
Log in with the same email address you used for your Pass, and enter the departure and arrival station. The timetable will then show you where seat reservations are needed. If the route shows a green note ‘Included’, there is no need to make a seat reservation. If the route shows ‘Seat reservations required’ in orange, you need to make a seat reservation.
When you add your reservations to your cart, click on View Cart to see an overview. Click on Checkout and follow the steps to enter your details (if needed). You can then proceed to payment. Once the order is confirmed, you will receive a confirmation email. The e-tickets in your order can be found in the attachment to this email, while any paper tickets will be shipped to your address as soon as possible. You will receive a Track & Trace code once this is done, so keep an eye on your messages in the following days.