The fountain would have deserved to be weighted to avoid accidental spills when it is not full and that the cat is dissipated or wants to play!
The pump and the flow of water agree (which is quite normal and is not in my view a product defect). Be careful not to place the fountain near a bed, a desk or a place or concentration is required - the noise of the flow is quickly annoying! The noise is more pronounced when the fountain is empty, which can attract the cat and get him to play with water more than at drinking.