Using the interrail pass in Switzerland in January and now again in March I must experience that some SBB trains e.g. between Kreuzlingen and Weinfelden, or Weinfelden-Winterthur are not bookable anymore

Lines which are marked as valid in the Swiss Interrail map Map of Switzerland_SBB.JPG (1124×795) (interrail.eu) can no longer be booked (and I booked them with my old pass in January):

But it worked beforehand, e.g. example from January:

and the exactly same train in March:

How could this happen and why is there no information about on the page that not all SBB trains are supported anymore or at least a current map of supported trains?
Best answer by inrareich
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