Post [Q] "One Hand Operations" cant function on Phoenix v18.8

I have a problem with one application of "One Hand Operation" on Phoenix rom ver18.8.

I have enabled applications, but functions on the keypad and the menu does not change the other becomes smaller. Keypad can not slide to the left and to the right. The position remains as the original default.

How do I overcome the above problems?

Thank you for the information.