I'm trying to book a seat reservation for a train from Paris nord to Amsterdam and its sold out
I tried to book throw Thalys and I found out some trains with available seat reservation in different times than the times available in the eurail application
So if I booked a seat reservation separately for the times that they are not excited in the eurail global app is that possible? and do I need to use a travel day regardless the availability in the app
And once I booked a seat reservation throw Thalys do I have to do any thing else in the eurail app
Thanks