I can put a seat reservation into my shopping cart, but every time I go to check out and accept terms and conditions I get:
Please try to find an alternative connection. The unavailable leg will be removed from your cart.
So I can’t purchase.
If I cancel the reservation, I can still rebook it (i.e. it isn’t unavailable) but it always fails at checkout
Best answer by mcadvView original
What date, time and route are you trying to get a reservation for?
Here is some useful information from the experienced travellers in the Community regarding both planning, reservations and activation of pass and travel days.
The rail planner is normally not up to date, as it only is updated once a month, so to be sure of the time table you better check the timetable and availability on the websites of the national railways. The bigger national railways, like DB (Germany) SBB (Switzerland) and ÖBB (Austria) cover several countries.
The advice from the experienced travellers in the community is to use other ways to make reservations than the Interrail/Eurail website. You can look at the guide in the link:
If you, after having looked at the guide, have questions about how to make specific reservation, please give your travel details (departure date, time and route) preferably in a new topic, and you will get advice.
Please note that Interrail/Eurail charges an extra fee of 2 EUR per person and train in addition to the fee for the seat reservation.
Activation of pass
During the activation process, when you choose the start day of the validity of the pass, the first day of the validity period is automatically made a travel day, even if you don't enter a journey, the advice is therefore not to activate the pass before the first travel day as you only can deactivate the pass before 00.00 on the day the validity starts. If your travel plans change in the last moment you will loose travel days if you have activated the pass in advance.
It can be wise to make a test and activate the pass with a start date well in the future and then deactivate the pass immediately, just to see that everything works.
Activation of travel day
The advice from the experienced travellers in the community is also never to activate a travel day, that is connect a journey to your pass and create the ticket (QR code), until just before boarding the train, otherwise you might loose a travel day if your travel plans change in a late stage You can't delete a travel day in the past. A travel day can only be deleted until 23.59 CET the day before the travel day.
Seems to be nr 11 today with same problem.
And hence the same withOUT any exact details IMpossible to answer. Its quite likely there is a sector that cannot even be RES or not via the app.
OR find the ALT list by seewulf of howtodoRES on your own via the railways (and also for less) and try that.