If you face problems related to Easy Admin plugin, following infromation may resolve most common issues.
I can’t see simplified WordPress administration
Easy Admin plugin is applied for all user roles except Administrator role. If you have registered users on website and they don’t have set up Administrator role, they will see simplified administration.
User with Administrator role must have access to all default WordPress options.
Change of Easy Admin options are not saved
Styles for simplified administration are stored in style.css file in plugin folder. Make sure this file has set up write permissions on your server (777 or 766). If you are not sure how to change file permissions for files, contact please your hosting provider for more information.
Settings are saved only if you change some of available plugin options, for example changed color using colorpicker. When no change was made in settings, click on Save button do nothing.
Modify access to options in Easy Admin
Note please, that Easy Admin plugin only change the look of administration area, plugin do not change capabilities for user roles in any way. To change users capability use please another third party plugin like User Role Editor.