Hi @saysuonsophal1123,
Glad to know you liked the plugin. Currently, it is not possible to add a password on the admin screen of this plugin but we would like to mention that by default the plugin’s interface is accessible only to the Admin role users.
Also, could you tell us what is the purpose of putting up a password? Just curious to know about the use case because as such the screen is not accessible to all the user capabilities?
Thank You!