Did you delete the previous layout and selected the new one as defaut?
To enable a new keyboard layout go to Preferences<Keyboard<Layout
Choose Add and select the one you want. Then check and as default. If you wanna have two or more layouts enabled and want to switch between them whenever you want, click Layout Options<Keys to change layout.
Choose a hotkey you want.
And that`s it.
PS: some hotkeys combinations may not work. I suggest trying the combinatios Alt+Shift as a hotkey.