Which of the following is not correct?

At a definite temperature, the value of $K_{W}$ (the ionic product of water) is constant.

$K_{W}=\left[\mathrm{H}^{+}\right]\left[\mathrm{OH}^{-}\right]$

This value changes with temperature. As temperature increases, the autoionization of water increases, leading to higher concentrations of $\mathrm{H}^{+}$and $\mathrm{OH}^{-}$ions, and thus a larger $K_{W}$ value. Conversely, as temperature decreases, $K_{W}$ decreases. ©

However, for any specific given temperature, the product of the hydrogen ion concentration and the hydroxide ion concentration remains constant. For example, at $25^{\circ} \mathrm{C}, K_{W}=1.0 \times 10^{-14}$.