Locked subject
Why a subject is locked and how to restore access.
阅读约 1 分钟已更新 June 15, 2026 已审阅 June 15, 2026
A locked subject usually reflects your plan or your billing status. Free and Pro include a subset of subjects; Premium (and Enterprise) unlock everything — see plans and what's included.
See Why is a tutor locked? for the full list of reasons and fixes, and Billing status mismatch if billing looks correct.
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