Hello,
I already bought my 9-euro ticket using the BVG app, and I’m planning to go to other cities in Germany as many as you are planning. The question is: how do I reserve a trip in the [bahn.de](https://bahn.de) page if I already bought the ticket using the BVG app? Do I have to pay the 9 euros again and they refund me the money? It is my first time traveling to other cities.
Thank you for answering