I can see it on Rail Planner so you should be able to too. Search Budapest-Deli - Zagreb Glavni Kol if needed

Thank you for your answer

Unfortunatly i see nothing on the app, there is what i can see: 

Thank you for your help

Hi again,

I updated the app and every thing is okey now, i can see the train, thank you 

I see it too in my app. Sure you have no filter on or something similar? Latest version of the app? 

You can always add a train manually.

EDIT: Good, solved. In doubt, always rely on the information from the rail company, not the rail planner app.