I paid, but the tool is still locked. What should I do?

Payment went through but the tool still shows locked or watermarked? Work through these, in order:

1. Make sure you're on the same book you paid for. Licenses are per book. If you started a new project or opened a different title, the key won't apply to it. Reopen the exact book you purchased for.
2. Sign in. Go to My Books and sign in with the email you used. Your license keys sync down automatically and unlock the book.
3. Enter the key manually. On the checkout screen there's an "enter license key" option — paste the key from your purchase confirmation or from My Books → Purchases & license keys.
4. Re-export. After it unlocks, export again to get the clean file (the watermark won't disappear from an already-downloaded file).

Still stuck? Email [email protected] and include the book ID shown on the checkout page (under the cover). With that we can look up your purchase and sort it out.