Issue Generating System User Access Token (Permanent)

Hello everyone, i'm experiencing trouble generating a permanent access token for my whatsapp app, basically i'm completing all the steps and sending the vertification code to my phone and verifying, and get met with the 'thanks for submitting your info' window, and once i click 'Done' there's no window with the access token appearing, i have verified my business with meta in hopes of fixing this, and it persists.

Any HELP is appreciated! thank you in advance.