Hi,
Thank you for reaching out to us.
From your description, we are not able to get about which pop-up window and title you are talking about. If possible please share the screenshot of it.
You want to remove “No apps configured. Please contact your administrator” message then you can disable Default Login Form and Default registration Form display options from the Display Options section in the plugin.
For the further queries, please reach out to us at info@xecurify.com
Thanks,