Locked subject
Why a subject is locked and how to restore access.
読了時間 1 分更新日 June 15, 2026 レビュー日 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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