(23 Feb 2020, 3:37 pm)Kuyoyo wrote How it works is as followed:
You can book a journey from a spot within a zone to one of the ‘secondary’ destinations - which in the case of Redcar and Cleveland Zone is Redcar, Skelton and Guisborough. But it needs to be booked as a return journey as you can’t book a journey from a secondary destination to a destination within the Zone.

Except the app doesn't appear to give an option of a return journey. 
At least not until the point of confirming an order. 
As the example I used yesterday wouldn't let me confirm the order, then I'm not sure where the option would be to book a return.

On the link I shared yesterday, it has both Redcar and Saltburn Station as possible destinations. 
Redcar Station is available to select on the map. Saltburn isn't.