Login prompt for visitors who can't enter
It shows a login and sign-up prompt to visitors who don't have permission to enter the chat room.
Settings and how to use
Enter your site's addresses in Login page URL and Sign-up page URL. A button doesn't show if its field is empty.
When a visitor taps Log in or Sign up, the page that contains the chat goes to that address. Close only closes the prompt.
Set who can enter separately in the chat room. This plugin alone doesn't block guests from entering.