Alternative: Conditional Menus

Unfortunately you didn’t write which theme your website uses. Therefore, it is difficult to give you a recommendation. Also, the question is to what extent the plugin is not compatible with your theme. If necessary, it would be useful if you contact the plugin developer for clarification: https://wordpress.org/support/plugin/conditional-menus/