Can't change design

Does anyone know why I can't change my sign design, I deleted the current design and replaced it with soemthing else via the qr machine. is that the reason? Do i have to demolish and rebuild it to be able to enter a new design?

Does anyone know why I can't change my sign design, I deleted the current design and replaced it with soemthing else via the qr machine. is that the reason? Do i have to demolish and rebuild it to be able to enter a new design?