Try replacing
store:TweenPosition(UDim2.new(0.16,0,0.65,0,Enum.EasingDirection.Out,Enum.EasingStyle.Exponential,0.25))
with
store:TweenPosition(UDim2.new(0.16,0,0.65,0),Enum.EasingDirection.Out,Enum.EasingStyle.Exponential,0.25)
Exponential is not an easing style as far as I’m aware, and your closed parentheses for the UDim2.new() constructor was in the wrong position.
Edit: Nevermind! I guess I didn’t get the memo that Exponential, Cubic, and Circular have been added as styles.