Why can't I withdraw my buying power on Robinhood?

Why is it that I'm unable to withdraw my buying power on Robinhood? I've been trying to access it for some time now, but it seems like I'm hitting a roadblock. Could it be an issue with my account settings, or is there a specific reason why this feature is unavailable? I'm eager to understand the underlying cause so I can take the necessary steps to resolve it and regain access to my funds. Could you please shed some light on this matter?