Have you tried already doin this?
1. go on the main menu (top left side of the screen)
2.click on "settings" (first choice after your name)
3. click on "take me home" adress" (second to last choice on the list)
4. type your closest bus or train station
The App shows you automatically the next connection to go there.
To see if it worked, go to the homepage of the app and select "take me home": the timetable with the next possible connections from your curret location to your chosen bus/train station immediately shows up. Please note, the current location must be enabled.
I hope this helps!
Have a nice day