From June 01, 2020 check-in and receipt of a boarding pass for the railway sections of Deutsche Bahn trip is only possible ONLINE via the website www.rail-checkin.com within 72 hours before the scheduled train departure. (Example: departure of DB train trip 09:00 04 October, check-in for this railway trip is possible starting from 09:00 01 October until the departure of the flight according to the schedule).
In case of difficulties with online check-in on personal electronic devices (e.g. mobile phone, PC), self-service terminals are located at the airports of Frankfurt and Dusseldorf, as well as at the main central stations in Germany, where you can also check in online and get a boarding railway ticket.
In addition, the registration platform has the function of selecting and reserving a seat in the train carriage for a fee.