Test case:
Native + Banner, Multi-size (240x400, 300x600), RTB creative (Square Image)
Expected:
Creative: Native (App Install) [240x400],
Banner [240x400, 300x600]
Presentation: P308
Native + Banner, Multi-size (240x400, 300x600), RTB creative (Square Image)
Expected:
Creative: Native (App Install) [240x400],
Banner [240x400, 300x600]
Presentation: P308