Sorry, we no longer accepting questions from this account

When attempting to post a new question on Stack Overflow, some users encounter the error: 'We are no longer accepting questions from this account. See the Help Center to learn more.' This automatic question ban triggers based on poorly-received content, specifically downvoted, closed, or deleted posts. While the Help Center confirms the ban is automatic, it does not disclose the exact thresholds, weighting of factors, or time windows. Since moderators and staff cannot manually lift this ban, the only documented path to regain privileges is to improve existing questions to attract upvotes or wait for a system re-evaluation. What is the specific ratio of negative-score questions to total questions that triggers the ban? Does the system evaluate these metrics in real-time or during periodic batch-scoring cycles? Do editing existing questions positively offset the negative ratio immediately?