All our scripts are installed on your server and your server makes posts to your networks directly. When you make a post your server logins to your account on your behalf and makes a post. The location that Facebook is asking you to confirm is a location of your server.
Please confirm that it was you. It might take several times and then Facebook will stop asking.
Alternatively please try to use session instead of username password or vise versa.
Session Instructions: https://www.nextscripts.com/snap-nextscripts-api-for-facebook-configuration/#session
