I get this message every time I try to make reservation for the train. I used different browser, I used another account that is with the person I am traveling with but still nothing. I can make reservation on different trains no problem but this one I really need doesn't work. please help or got any suggestions?
The Interrail website is buggy and too expensive (extra fees). Try booking elsewhere:
Here's a good guide: https://www.seat61.com/interrail-and-eurail-reservations.htm
(Btw since this train is crossing Germany and especially the Ruhr area, expect delays. Do not plan too tight connections in Basel.)
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