Is it possible to issue an invoice proving the purchase of the Dronelink app license?

Hello, I'm from a federal university here in Brazil, and I'm part of a project on drone education in high schools. I'd like to purchase a license for my DJI MINI 3 drone. However, I'll use the money I earn from the project to purchase the license, so I need an invoice. So, I'd like to ask if it's possible to issue an invoice proving I purchased the app license?