Writee Pro and User Menu Plugins Not Working

Hi!

I want to make some menu items only shown to logged in users. I have tried two plugins: Nav Menu Roles by Kathy Darlings and User Menus – Nav Menu Visibility by Code Atlantic. Neither of them work with Writee Pro. I cannot see the option to choose which users can see what. I have tried other themes and it works with them. It even works with the free version of Writee, but not with Writee Pro.

Any help would be much appreciated!