Interrail website has a known issue with Spanish trains at the moment. Usually Happy Rail worked though…
Since you live in Germany: Spanish train reservations are available at DB ticket offices (staff have more experience in Reisezentren). Mention the train number.
Hello, thank you very much for the information! I am already in Spain and need the reservations for the return journey. It would be quite a hassle for me to make the reservation at a station in Spain at the moment. But this would also be possible in principle, wouldn't it?
Do you know how long the problem with reservations via interrail.eu has been going on?
I could wait another 2-3 days, but if the problem has been unresolved for a long time, it probably doesn't make sense...
A few days but no idea if the team is working on it.
Yes, it would be possible at stations. Expect long queues as staff isn't very quick...