Lemming8 any error logs in Flarum or browser console? Is the approval extension enabled? Does the user have admin permissions?
Please share more information with us. Since I was aiming at FreeFlarum only, I can't help you much with this, but do share your error logs (if there are any), it will greatly help the developers to fix the issue, rather than just saying that it doesn't work, which is not really helpful for developers to fix your issue, in my opinion