Is there a possibility for us to use the app for screenshots or for recreation of mockups of the application in the banner

Unfortunately now, I created that using a picture I found and modifying it so that is the only source.

The design should be created in vector or may be also in photoshop?

Hi there, would you consider new stock photography for your banner? thanks, Jody :)

photoshop preferred, trying a different stock graphic would be fine